Explanation at your level:
A trio is three people or three things. If you have three friends, you are a trio. It is a fun word to use when you want to say 'three' in a special way.
When three people work together, we call them a trio. You might see a music trio on TV. It is just a word for a small group of three.
The word trio is used to describe a set of three things or people that are connected. It is very common in music, but you can use it for any group of three that acts as a unit.
Using trio adds a touch of precision to your language. It suggests that the three elements belong together. It is frequently used in professional or artistic contexts to denote a cohesive group.
Beyond its literal musical definition, trio is often used figuratively to describe dynamics between three people. It implies a specific social or functional structure where the number three is central to the group's identity.
The term trio carries historical weight from its roots in classical music theory. In advanced discourse, it can denote a balanced, tripartite structure, reflecting the aesthetic value placed on the number three in Western culture and art.
Word in 30 Seconds
- Trio means three.
- Common in music.
- Plural is trios.
- Use for connected groups.
When you see three things together that seem to belong as a team, you are looking at a trio. It is a very specific word that highlights the number three in a way that feels intentional or organized.
Think of a trio as a tight-knit unit. Whether it is three best friends walking to school or a musical trio performing on stage, the word implies a sense of harmony and connection between the members of the group.
The word trio comes to us from the Italian word trio, which itself evolved from the Latin trias, meaning 'the number three'. It entered the English language in the early 18th century, primarily through music.
Historically, it was used to describe a specific section of a musical composition where three parts were played. Over time, the usage expanded from concert halls into everyday language to describe any group of three entities working in unison.
You will hear trio used most often in arts and entertainment. It is common to say a 'jazz trio' or a 'string trio'. However, it is also perfectly fine to use it in casual conversation to describe a group of people.
Be careful not to use it for just any random collection of three items. A trio usually implies that the items are related or functioning together, rather than just being three separate things sitting on a shelf.
While trio itself isn't the base of many idioms, it appears in phrases like 'the unholy trio' to describe three people causing trouble. Another common usage is 'a classic trio', often referring to ingredients or items that always work well together.
We also see 'power trio' used in rock music to describe a band consisting of just a guitarist, bassist, and drummer. These expressions add a bit of flair to your description of groups.
The plural of trio is trios. It is a countable noun, so you can say 'a trio' or 'two trios'. In terms of pronunciation, it is TREE-oh in both American and British English.
It often takes a singular verb when referring to the group as a single entity (e.g., 'The trio is performing tonight'), but can take a plural verb when focusing on the individuals (e.g., 'The trio are all wearing different colors').
Fun Fact
It was originally a musical term before becoming a general word.
Pronunciation Guide
tree-oh
tree-oh
Common Errors
- pronouncing it like 'try-o'
- forgetting the 'o' sound
- stressing the second syllable
Rhymes With
Difficulty Rating
easy
easy
easy
easy
What to Learn Next
Prerequisites
Learn Next
Advanced
Grammar to Know
Collective Nouns
The trio is...
Articles
A trio
Plurals
Trios
Examples by Level
They are a trio.
group of three
simple subject-verb
The music trio played a song.
We are a trio of friends.
Look at that trio of birds.
A trio of cakes was on the table.
The trio performed well.
They formed a small trio.
I saw a trio of dancers.
The trio walked together.
The jazz trio was excellent.
She joined a trio of singers.
The trio decided to travel together.
They are a powerful trio.
A trio of experts gave advice.
The comedy trio made us laugh.
This trio works in harmony.
We need a trio for the play.
The violin trio played beautifully.
The trio of leaders met in secret.
He is part of a famous trio.
The trio of flavors was delicious.
They are a formidable political trio.
The trio collaborated on the project.
A trio of problems arose.
The trio of colors looks great.
The trio of novels explores deep themes.
Their trio dynamic is quite complex.
The trio of researchers published a paper.
A trio of events changed the city.
The trio of actors stole the show.
He managed the trio with ease.
The trio of colors creates a contrast.
They formed an unlikely trio.
The trio of movements in the symphony is masterful.
This trio of concepts forms the basis of the theory.
The trio of protagonists faces many trials.
A trio of distinct voices emerged.
The trio of stars shone brightly.
The trio of policies was implemented.
Their trio of efforts yielded results.
The trio of elements creates balance.
Common Collocations
Idioms & Expressions
"the unholy trio"
three things or people that are bad together
They were known as the unholy trio.
casual"a classic trio"
three things that always work well
Eggs, bacon, and toast—a classic trio.
neutral"in a trio"
working as a group of three
They work best in a trio.
neutral"trio of terror"
three people causing problems
The kids were a trio of terror.
casual"power trio"
a highly effective group of three
The new team is a power trio.
casualEasily Confused
both describe groups
duo is 2, trio is 3
A duo sings; a trio plays.
musical term
quartet is 4
Quartet has 4 members.
related to 3
triplets are siblings
She had triplets.
group of 3
trinity is religious
The holy trinity.
Sentence Patterns
The trio of [noun] [verb]
The trio of singers sang.
They formed a trio
They formed a trio.
A trio of [noun] is [adj]
A trio of friends is happy.
Join the trio
Join the trio for music.
The trio consists of [noun]
The trio consists of three.
Word Family
Nouns
Verbs
Adjectives
Related
How to Use It
7
Formality Scale
Common Mistakes
Trio strictly means three.
Plural is trios.
Trio is singular.
Redundant.
Collective noun agreement.
Tips
Prefix Power
Remember TRI = 3.
Musical Context
Always safe to use for bands.
Pop Culture
Look for trios in movies.
Agreement
Use singular verbs.
Clear Vowels
Say tree-oh.
Don't add -es
It is trios.
History
It comes from Italian.
Grouping
Group words by number.
Articles
Always use 'a' or 'the'.
Context
Use for connected groups.
Memorize It
Mnemonic
TRI-o starts with TRI, which means three.
Visual Association
A triangle with three points.
Word Web
Challenge
Find three things in your room and call them a trio.
Word Origin
Italian
Original meaning: three
Cultural Context
None.
Commonly used in music reviews and sports teams.
Practice in Real Life
Real-World Contexts
music
- jazz trio
- string trio
- vocal trio
social
- trio of friends
- the trio is together
- a happy trio
business
- a trio of leaders
- the management trio
- a trio of goals
travel
- a trio of travelers
- the trio arrived
- a trio of bags
Conversation Starters
"Who is your favorite musical trio?"
"Can you name a famous trio?"
"Do you prefer working in a duo or a trio?"
"What is a classic trio of foods?"
"Would you like to be in a trio?"
Journal Prompts
Write about a trio of friends.
Describe a musical trio you heard.
Why is three a special number?
Create a story about a trio of adventurers.
Frequently Asked Questions
8 questionsNo, it can be any group of three.
Trios.
Yes, a trio of apples.
It is neutral.
Yes.
Italian.
Yes, in music contexts.
Yes.
Test Yourself
The ___ is playing music.
Trio means three.
What is a trio?
Trio is a group of three.
A trio can have 4 people.
A trio must have 3.
Word
Meaning
Matching numbers.
Standard order.
Score: /5
Summary
A trio is a harmonious group of three.
- Trio means three.
- Common in music.
- Plural is trios.
- Use for connected groups.
Prefix Power
Remember TRI = 3.
Musical Context
Always safe to use for bands.
Pop Culture
Look for trios in movies.
Agreement
Use singular verbs.
Example
The trio of friends went to the cinema together.
Related Content
More music words
quintet
A1A quintet is a group of five people who play musical instruments or sing together. It can also refer to a musical composition written specifically for five performers.
trumpet
A1A musical instrument made of brass that you play by blowing into it and pressing three valves. It has a bright, powerful sound and is often used in jazz, classical music, and marching bands.
folk
A1Folk refers to a style of traditional music that represents the culture of a specific group of people. It is usually played on acoustic instruments and often tells stories about everyday life or history.
electronic
A1A style of music created using technology and electronic instruments. It is made with computers, synthesizers, and drum machines instead of traditional instruments like guitars or pianos.
mixer
A1An electronic device used in music to combine and adjust different sound signals. It allows a person to control the volume and tone of various instruments or voices at once.
note
A1In music, a note is a single sound with a specific pitch and length. It also refers to the written symbol on a page that tells a musician which sound to play.
ukulele
A1A small musical instrument with four strings that looks like a tiny guitar. It is often played by plucking or strumming the strings and is known for its bright, cheerful sound.
banjo
A1A banjo is a musical instrument with a circular body, a long neck, and four or five strings. It produces a sharp, twangy sound and is primarily used in folk, country, and bluegrass music.
xylophone
A1A musical instrument that consists of a row of wooden bars of different lengths. You play it by hitting the bars with special sticks called mallets to produce different musical notes.
harpsichord
A1A musical instrument with a keyboard that looks like a piano. When you press the keys, the strings inside are plucked rather than hit, creating a sharp, metallic sound common in old classical music.
