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A2 verb 10 min read

acender

Examples acender in 30 Seconds
Explanation acender in your Level:
At the A1 level, 'acender' is primarily used for basic daily needs. You will learn it as part of your vocabulary for the home. The most important phrase to remember is 'acender a luz' (to turn on the light). At this stage, you don't need to worry about complex grammar or metaphorical meanings. Focus on the present tense: 'Eu acendo a luz' (I turn on the light) or 'Você acende o fogão' (You light the stove). It is a very practical word. You will use it when you arrive at your hotel or apartment and need to find the light switch. You might also use it in a restaurant if you want someone to light a candle. Keep it simple and focus on the physical objects around you that can be lit. Remember that the opposite is 'apagar' (to turn off/extinguish). Learning these two together as a pair is the most effective way to memorize them. Think of 'acender' as the 'start' button for anything that makes light or fire.
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At the A2 level, you start to expand the variety of objects you can 'acender'. You move beyond just lights and stoves to include 'acender uma vela' (light a candle), 'acender um fósforo' (light a match), or 'acender uma fogueira' (light a bonfire). You will also begin to use the imperative form more often, especially when giving or receiving simple instructions, like 'Acenda a luz, por favor' (Light the light, please). This is also where you should start noticing the difference between 'acender' and 'ligar'. While you 'liga' the TV or the radio, you 'acende' the lamp. You might also encounter the irregular past participle 'aceso' used as an adjective, such as 'A luz está acesa' (The light is on). At this level, you should be comfortable using 'acender' in the past tense (Pretérito Perfeito) to describe things you did: 'Ontem, eu acendi a lareira' (Yesterday, I lit the fireplace).
By the B1 level, you are ready to explore the metaphorical and more nuanced uses of 'acender'. You will hear it in contexts like 'acender uma discussão' (to spark a discussion) or 'acender a curiosidade' (to spark curiosity). You will also start using the verb in more complex sentence structures, including the subjunctive mood. For example: 'É importante que você acenda os faróis do carro' (It is important that you turn on the car's headlights). This is the stage where the distinction between 'acender' and 'ascender' (to rise) becomes crucial for your writing. You should be able to explain the difference. You will also become more proficient with the double past participle, knowing that 'Eu tinha acendido' is for the action, while 'A luz estava acesa' is for the state. You might also start using 'acender' in idiomatic expressions or more descriptive narratives about atmosphere and mood.
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At the B2 level, you should use 'acender' with precision and stylistic variety. You will understand how it functions in literary texts to create imagery. For instance, a writer might use 'acender' to describe the sunrise 'acendendo o horizonte' (lighting up the horizon). You will also handle the reflexive and passive forms more naturally. You might discuss social issues using the word, such as how a specific event 'acendeu o debate sobre a educação' (ignited the debate about education). Your mastery of the verb's conjugation should be complete, including the less common tenses like the Pluperfect or the Future Subjunctive. You will also be aware of regional variations, such as the use of 'abrir a luz' in some dialects, and understand why 'acender' is the more formal or standard choice. At this level, you can use the word to describe complex emotional states, such as 'acender uma paixão antiga' (rekindling an old passion).
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At the C1 level, you use 'acender' as a versatile tool for sophisticated expression. You can weave it into academic or professional discourse, perhaps discussing how a new policy might 'acender as esperanças dos investidores' (ignite investors' hopes). You will have a deep understanding of its etymology and how it relates to other Latin-based languages. You can distinguish between 'acender', 'atear', 'incendiar', and 'inflamar' with ease, choosing the one that provides the exact connotation you desire. Your writing will be free of the 'acender/ascender' confusion, and you might even use the word in wordplay or advanced rhetorical devices. You will understand the cultural nuances of 'acender velas' in Lusophone religious traditions and be able to discuss the historical evolution of the word from fire-based lighting to electrical systems. You can use it in highly abstract ways, such as 'acender o intelecto' (igniting the intellect).
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At the C2 level, 'acender' is a word you use with the effortless grace of a native speaker. You understand its place in the history of Portuguese literature, from the classical poets to modern novelists. You can use it in any register, from the most informal slang to the highest legal or scientific language. You might use it in complex metaphors that span entire paragraphs, playing with the concepts of light, heat, and visibility. You are fully aware of all rare and archaic uses of the word. You can effortlessly switch between 'acender' and its synonyms to maintain a specific rhythm or tone in your speech. For a C2 learner, 'acender' is not just a verb; it is a conceptual building block that you can manipulate to express the finest shades of meaning, whether you are writing a technical manual or a piece of creative fiction. You possess a total command of its phonetics, orthography, and semantic range.
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Examples

acender in 30 Seconds

  • Acender means to light or ignite something, like a fire or a lamp.
  • It is commonly used for domestic tasks like lighting the stove or turning on lights.
  • The word has a homophone, 'ascender', which means to rise or climb.
  • The irregular past participle 'aceso' is often used as an adjective meaning 'on'.

The Portuguese verb acender is a fundamental action word that every learner must master early in their journey. At its core, it refers to the act of causing something to start burning or to start emitting light. Whether you are striking a match to start a campfire, clicking a lighter for a candle, or simply flipping a switch on the wall to illuminate a dark room, acender is the verb you need. It is a bridge between the ancient world of fire and the modern world of electricity, covering both the chemical process of combustion and the technological process of closing an electrical circuit to power a bulb. In a domestic setting, you will use it constantly: acender a luz (turn on the light), acender o fogão (light the stove), or acender uma lareira (light a fireplace). Beyond the physical, the word carries a significant metaphorical weight. Just as a physical flame brings warmth and visibility, acender can describe the ignition of emotions, hopes, or debates. You might hear about a speech that 'lit a fire' under a crowd or a look that 'ignited' a passion. This dual nature—physical and abstract—makes it a versatile tool for communication.

Physical Ignition
The most common use involves fire. If you are using a match (fósforo) or a lighter (isqueiro), you are performing the action of acender. This applies to cigarettes, candles, wood, or gas stoves.

Por favor, você pode acender a vela sobre a mesa?

Translation: Please, can you light the candle on the table?
Electrical Illumination
In modern Portuguese, acender is the standard verb for turning on lights. While 'ligar' is also used for electronics, acender specifically focuses on the result of illumination.
Metaphorical Spark
Used to describe the beginning of an intense feeling or a social movement. Examples include 'acender uma discussão' (to spark a discussion) or 'acender a esperança' (to kindle hope).

As palavras do líder conseguiram acender o entusiasmo de todos.

Translation: The leader's words managed to ignite everyone's enthusiasm.

Understanding the context is key. In Portugal and Brazil, the usage is mostly identical, though regional preferences for 'ligar' vs 'acender' for electrical lights can vary slightly. Historically, the word comes from the Latin 'accendere', which has always carried this meaning of setting fire to or brightening. When you use this word, you are connecting to a long history of human interaction with light. It is a word of action, transition, and clarity. Whether you are preparing a romantic dinner or just trying to find your keys in the dark, acender is the spark that starts the process.

Using acender correctly requires an understanding of its transitivity and its irregular past participle. Primarily, it is a transitive verb, meaning it needs a direct object—the thing being lit. You don't just 'acender'; you 'acender algo' (light something). The structure is straightforward: Subject + Verb (conjugated) + Object. However, things get interesting when we look at the result of the action. Portuguese has two past participles for this verb: 'acendido' (regular) and 'aceso' (irregular). While 'acendido' is technically correct for compound tenses with 'ter' or 'haver' (e.g., Eu tinha acendido a luz), the irregular form aceso is overwhelmingly more common in everyday speech and is used as an adjective (e.g., A luz está acesa).

Direct Objects
Common objects include: a luz (the light), o fogo (the fire), a vela (the candle), o cigarro (the cigarette), o fósforo (the match), a fogueira (the bonfire).

Ele acende um fósforo para ver no escuro.

The Passive State
When describing the state of being lit, use the adjective 'aceso'. Remember to match the gender and number of the noun: 'luz acesa' (feminine singular), 'fogos acesos' (masculine plural).

As luzes da cidade já estão todas acesas.

In imperative forms, which are very common for this verb, you will hear 'Acende a luz!' (informal/Tu) or 'Acenda a luz!' (formal/Você). In Brazil, 'Acenda' is the standard for almost all interactions. In Portugal, 'Acende' is preferred for friends and family. Another nuance is the reflexive use, though rare, where something 'se acende' (lights itself up), often used in poetic or scientific contexts like 'A chama se acendeu espontaneamente' (The flame ignited spontaneously). Mastery of acender also involves knowing its opposite: 'apagar' (to extinguish/turn off). These two verbs form a pair that governs almost all interactions with light and fire in the Portuguese-speaking world. Practice by narrating your evening routine: 'Eu entro no quarto, acendo a luz, e depois de ler, apago a luz para dormir.'

The word acender is ubiquitous, echoing through various layers of daily life in Lusophone cultures. You will hear it most frequently in the domestic sphere. In a Brazilian kitchen, as someone prepares to cook 'feijão', you'll hear: 'Deixa eu acender o fogo'. In a Portuguese 'sala de estar' during a cold winter night in Coimbra, a host might ask: 'Queres que eu acenda a lareira?'. It is a word of hospitality and preparation. It also appears constantly in public spaces. On a bus or in a theater, signs might read 'Proibido acender cigarros' (Smoking/lighting cigarettes prohibited). In religious contexts, which are very prominent in Brazil and Portugal, acender is the verb of devotion. People go to church to 'acender uma vela' for a loved one or a saint. This specific ritualistic use gives the word a solemn, respectful connotation in those environments.

In the Kitchen
Used for the stove (fogão) or oven (forno). 'O forno não quer acender' (The oven won't light/start).

Cuidado ao acender o fogão a gás.

On the Streets
Automobile context: 'Acender os faróis' (to turn on the headlights). This is a legal requirement in many Brazilian highways even during the day.

Não esqueça de acender os faróis na estrada.

Furthermore, in the world of nightlife and celebrations, you'll hear it regarding fireworks (fogos de artifício) or decorative lights. During 'Festa Junina', a massive Brazilian cultural festival, 'acender a fogueira' is the central event. In music, lyrics often use acender to talk about love: 'Você acendeu meu coração'. Even in technical fields, an electrician might talk about 'acender o painel' (lighting up the panel). The word is so integrated into the fabric of life that it becomes invisible, yet it is the catalyst for almost every activity that happens after sunset. From the whisper of a prayer over a candle to the roar of a stadium's floodlights being 'acesos', the word is everywhere.

The most treacherous trap for English speakers and even native students is the confusion between acender and its homophone ascender. They sound identical in many dialects (both pronounced like 'a-sen-der'), but their meanings are worlds apart. While acender (with only a 'c') means to light or ignite, ascender (with 'sc') means to rise, climb, or move upward. Writing 'Ele ascendeu a luz' is a common orthographic error; unless the light bulb literally floated to the ceiling, you should have used acender. Another frequent mistake is the over-reliance on the verb 'ligar'. While 'ligar' is correct for turning on machines (computers, phones, cars), using it for a candle sounds unnatural. You don't 'ligar uma vela'; you acende it.

Acender vs. Ascender
Acender = Light/Fire. Ascender = Up/Rise. Memory trick: 'Acender' has one 'c' like 'candle'. 'Ascender' has 'sc' like 'stairs climb'.

Errado: Eu vou ascender a fogueira.
Correto: Eu vou acender a fogueira.

The Participle Mix-up
Learners often say 'A luz está acendida'. While 'acendido' exists, native speakers almost exclusively use 'aceso' as an adjective. 'A luz está acesa' is the natural way to say 'The light is on'.

A vela ficou acesa a noite toda.

Finally, be careful with the preposition 'com'. You acender something com something else. 'Acender o fogo com fósforos'. A common mistake is to forget the preposition or use 'por'. Also, remember that acender is a regular -er verb in the present tense, so it follows the standard pattern: eu acendo, tu acendes, ele acende, nós acendemos, eles acendem. Don't try to make it irregular in the present! The only 'irregularity' is that double past participle, which is a common feature of many Portuguese verbs. By keeping these distinctions in mind—especially the 'c' vs 'sc' spelling—you will avoid the most embarrassing slips and sound much more like a native speaker.

While acender is the workhorse for lighting things, Portuguese offers a rich palette of synonyms and related terms that can add precision or color to your speech. The most common alternative is ligar. While 'ligar' means to connect or turn on, it is the preferred term for electronic devices. You 'liga o computador' or 'liga o interruptor' (flip the switch). If you want to emphasize the resulting light, you 'acende a luz'. If you want to emphasize the action of starting a fire, especially a destructive or large one, you might use incendiar or atear. 'Atear fogo' is a very common expression for setting fire to something deliberately. For a more poetic or literary touch, iluminar (to illuminate) or alumia (to light up/shine upon) are excellent choices.

Ligar vs. Acender
Ligar is for circuits and machines. Acender is for the light or flame itself. You can 'ligar o interruptor para acender a luz'.

Ele ligou a lanterna para acender o caminho.

Atear vs. Incendiar
'Atear fogo' is the act of starting the fire. 'Incendiar' often implies a larger, more out-of-control fire or a metaphorical 'setting on fire'.
Iluminar
Focuses on the effect of the light rather than the ignition. 'O sol ilumina a terra' (The sun illuminates the earth).

A lua ilumina a noite escura.

Another interesting related word is despertar (to awaken). In metaphorical contexts, 'acender um desejo' and 'despertar um desejo' are almost synonymous, though 'acender' suggests a more sudden, fiery beginning. There is also brilhar (to shine), which describes what the light does once it is 'acesa'. By learning these alternatives, you can avoid repeating the same verb and start to express nuances. For example, instead of saying 'acender a luz' for the tenth time, you might say 'precisamos de mais claridade aqui' (we need more brightness here) or 'vamos iluminar este salão'. Understanding the spectrum from 'atear' (starting a fire) to 'iluminar' (providing light) gives you a complete toolkit for describing anything that glows, burns, or shines.

Pronunciation Guide

UK /ɐ.sẽ.ˈdeɾ/
US /a.sẽ.ˈdeʁ/
The stress is on the last syllable: a-cen-DER.
Common Errors
  • Pronouncing the 'c' as a 'k' sound (it should be 's').
  • Failing to nasalize the 'en' syllable.
  • Stressing the first or second syllable instead of the last.
  • Confusing the pronunciation with 'ascender' (though they are homophones in many dialects, some speakers try to distinguish them incorrectly).
  • Pronouncing the final 'r' to
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Examples by Level

1

Eu acendo a luz da sala.

I turn on the living room light.

Present tense, 1st person singular.

2

Você acende o fogão?

Do you light the stove?

Interrogative sentence.

3

Ela acende uma vela.

She lights a candle.

Simple transitive structure.

4

Nós acendemos a lâmpada.

We turn on the lamp.

Present tense, 1st person plural.

5

Eles acendem o fogo.

They light the fire.

Present tense, 3rd person plural.

6

Por favor, acenda a luz.

Please, turn on the light.

Imperative (você form).

7

Eu não acendo o cigarro.

I do not light the cigarette.

Negative sentence.

8

O menino acende a lanterna.

The boy turns on the flashlight.

Subject + Verb + Object.

1

Ontem eu acendi a lareira.

Yesterday I lit the fireplace.

Pretérito Perfeito (Past tense).

2

A luz já estava acesa quando cheguei.

The light was already on when I arrived.

Use of the irregular participle 'acesa' as an adjective.

3

Você pode acender os faróis do carro?

Can you turn on the car headlights?

Modal verb 'poder' + infinitive.

4

Ela acendeu o forno para o bolo.

She lit the oven for the cake.

Past tense, 3rd person singular.

5

Nós vamos acender uma fogueira na praia.

We are going to light a bonfire on the beach.

Immediate future (ir + infinitive).

6

Não se esqueça de acender a luz do corredor.

Don't forget to turn on the hallway light.

Negative imperative.

7

Ele acendeu um fósforo para procurar a chave.

He lit a match to look for the key.

Purpose clause with 'para'.

8

As velas estão acesas na mesa.

The candles are lit on the table.

Plural adjective 'acesas'.

1

A notícia acendeu a esperança no povo.

The news ignited hope in the people.

Metaphorical use.

2

Se você acender a luz, todos vão acordar.

If you turn on the light, everyone will wake up.

Conditional sentence (If-clause).

3

Espero que ele acenda o aquecedor logo.

I hope he turns on the heater soon.

Present Subjunctive after 'esperar que'.

4

Ela tinha acendido a churrasqueira antes da chuva.

She had lit the grill before the rain.

Past Perfect (Mais-que-perfeito composto).

5

O debate acendeu uma polêmica nacional.

The debate sparked a national controversy.

Abstract direct object.

6

Ao acender o interruptor, houve um curto-circuito.

Upon turning on the switch, there was a short circuit.

Gerundial-like use of 'Ao + infinitive'.

7

Sempre acendemos velas para nossos antepassados.

We always light candles for our ancestors.

Cultural/Religious context.

8

O sol acende as cores da floresta.

The sun ignites the colors of the forest.

Poetic usage.

1

O discurso do ativista acendeu os ânimos da multidão.

The activist's speech inflamed the spirits of the crowd.

Idiomatic 'acender os ânimos'.

2

Caso ele acenda o cigarro aqui, será multado.

Should he light a cigarette here, he will be fined.

Future Subjunctive with 'Caso'.

3

A chama se acendeu assim que o gás foi liberado.

The flame ignited as soon as the gas was released.

Reflexive use (se acendeu).

4

Ele tentava acender a paixão que havia esfriado.

He was trying to rekindle the passion that had cooled.

Imperfect tense for ongoing past action.

5

As luzes automáticas se acendem ao anoitecer.

The automatic lights turn on at dusk.

Pronominal use for automatic actions.

6

Não permitas que a raiva acenda o teu ódio.

Do not allow anger to ignite your hatred.

Negative Imperative (Tu form) with Subjunctive.

7

O fósforo não acendia por causa da umidade.

The match wouldn't light because of the humidity.

Imperfect tense expressing inability/resistance.

8

O sensor acendeu o painel de controle.

The sensor lit up the control panel.

Technical context.

1

A descoberta acendeu um novo interesse pela arqueologia.

The discovery sparked a new interest in archaeology.

High-level abstract usage.

2

Seria prudente que acendêssemos as luzes de emergência.

It would be prudent for us to turn on the emergency lights.

Imperfect Subjunctive in a hypothetical statement.

3

O autor utiliza a luz para acender a alma do leitor.

The author uses light to ignite the reader's soul.

Literary metaphor.

4

Mal a faísca saltou, a palha acendeu-se instantaneamente.

Hardly had the spark jumped, the straw ignited instantly.

Enclisis (acendeu-se) and 'Mal' as a conjunction.

5

A crise acendeu o alerta vermelho na economia.

The crisis triggered the red alert in the economy.

Metaphorical idiom.

6

É imperativo que se acenda a discussão sobre o clima.

It is imperative that the discussion on climate be sparked.

Passive voice with 'se' in the subjunctive.

7

O olhar dela acendeu nele uma coragem desconhecida.

Her gaze ignited in him an unknown courage.

Abstract emotional ignition.

8

O sistema foi projetado para acender gradualmente.

The system was designed to light up gradually.

Passive voice with 'ser'.

1

Sua retórica inflamada visava acender o estopim da revolução.

His inflamed rhetoric aimed to light the fuse of the revolution.

Complex metaphorical phrase 'acender o estopim'.

2

Oxalá acendam-se as luzes da razão neste conflito.

May the lights of reason be lit in this conflict.

Use of 'Oxalá' with the subjunctive.

3

A obra de arte acende questionamentos sobre a existência.

The work of art ignites questions about existence.

Philosophical usage.

4

O crepúsculo acendia as janelas da aldeia com reflexos dourados.

The twilight was lighting the village windows with golden reflections.

Highly descriptive literary style.

5

Não houve quem não se sentisse acendido por aquele ideal.

There was no one who did not feel ignited by that ideal.

Complex double negative structure.

6

A centelha de gênio acendeu-se precocemente naquele jovem.

The spark of genius ignited early in that youth.

Abstract metaphorical 'centelha'.

7

Acender a pólvora do descontentamento é um risco político.

Igniting the powder of discontent is a political risk.

Advanced political metaphor.

8

O maestro parecia acender a orquestra com seus gestos.

The conductor seemed to ignite the orchestra with his gestures.

Artistic metaphor.

Common Collocations

acender a luz
acender o fogo
acender uma vela
acender um cigarro
acender os faróis
acender a lareira
acender a esperança
acender o forno
acender uma fogueira
acender o interruptor

Common Phrases

Acenda a luz!

— A command to turn on the illumination.

Está muito escuro aqui. Acenda a luz!

Acender o estopim

— To start a conflict or a chain of events.

Aquela frase acendeu o estopim da briga.

Acender a chama

— To start a feeling, often love or passion.

Eles tentam acender a chama do romance.

Acender uma discussão

— To start a heated debate.

O comentário acendeu uma discussão no Twitter.

Vela acesa

— A lit candle, often symbolic.

Havia uma vela acesa na janela.

Fogo aceso

— A fire that is currently burning.

Mantenha o fogo aceso durante a noite.

Acender os ânimos

— To make people excited or angry.

O resultado do jogo acendeu os ânimos dos torcedores.

Acender a luz vermelha

— To trigger a warning or alert.

A queda nas vendas acendeu a luz vermelha na empresa.

Acender o cachimbo

— To light a pipe.

O avô gostava de acender o cachimbo à tarde.

Acender o fogão

— To start the cooking process.

Vou acender o fogão para fazer o jantar.

Idioms & Expressions

"Acender uma vela a Deus e outra ao diabo"

— To try to please two opposing sides at once; to be hypocritical or overly cautious.

Ele quer ser amigo de todos, acendendo uma vela a Deus e outra ao diabo.

informal
"Acender o estopim"

— To trigger a situation that was already tense.

A demissão do gerente acendeu o estopim da greve.

neutral
"Estar com o fogo aceso"

— To be very excited or motivated (sometimes used sexually in specific contexts).

Ele está com o fogo aceso para começar o novo projeto.

informal
"Acender a lanterna"

— To clarify a situation or bring understanding.

Sua explicação acendeu a lanterna sobre o problema.

metaphorical
"Acender o pavio"

— Similar to 'acender o estopim', to start something explosive.

Não acenda o pavio se não quiser ver a explosão.

informal
"Luz acesa, ninguém em casa"

— Used to describe someone who looks attentive but is actually distracted or not very bright.

Ele parece estar ouvindo, mas é luz acesa e ninguém em casa.

slang
"Acender a fogueira das vaidades"

— To provoke competition based on ego or vanity.

O prêmio acabou por acender a fogueira das vaidades no escritório.

literary
"Acender o sol"

— To bring immense joy or clarity to someone's life.

Sua chegada acendeu o sol no meu dia.

poetic
"Acender o alerta"

— To become worried or cautious about a situation.

Os novos dados acenderam o alerta na saúde pública.

journalistic
"Acender a curiosidade"

— To make someone very interested in something.

O trailer do filme acendeu a curiosidade do público.

neutral
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