Explanation at your level:
You use this when you want to say 'based on'. If you have a book, you can say 'I made this based on the book'. It is a very useful phrase for school!
When you have a reason for your work, use ~을 토대로. For example, 'I wrote this report based on the news'. It shows people that you have a good reason for your ideas.
This is a common way to link your actions to evidence. In professional emails, you might say, 'Based on our meeting, I have prepared this plan.' It sounds very natural and organized.
Using ~을 토대로 elevates your register. It is preferred in formal reports over simpler phrases. It implies that your conclusion is logically supported by the preceding information.
In advanced writing, this phrase functions as a structural anchor. It allows the writer to synthesize complex data into a coherent argument. It is essential for academic discourse where citing sources is mandatory.
The nuance here is one of structural integrity. By choosing ~을 토대로, you are asserting that your work is not arbitrary but is built upon a verified, foundational substrate of knowledge. It is the hallmark of a well-researched argument.
Word in 30 Seconds
- Means 'based on'.
- Used for formal/academic contexts.
- Follows a noun.
- Synonym of '바탕으로'.
The phrase ~을 토대로 is a cornerstone of Korean communication. It essentially means to use something as a foundation or a starting point for your ideas.
Think of it as building blocks. When you say you are writing a report ~을 토대로, you are saying that the report is supported by the information you have gathered. It is a very professional and clear way to explain where your thoughts come from.
The word 토대 (toda-e) comes from the Sino-Korean characters 土 (earth/ground) and 臺 (platform/stand). Historically, it literally meant the foundation of a building.
Over time, this physical concept evolved into a metaphorical one. Just as a building needs a solid foundation to stand, an argument or plan needs a solid base of facts to be convincing. It is a beautiful example of how physical architecture influences language.
You will hear this most often in academic or professional settings. It is perfect for meetings, presentations, and formal writing.
Commonly, it connects with verbs like 작성하다 (to write), 결정하다 (to decide), or 분석하다 (to analyze). It is more formal than simply saying ~에 근거해서, making it a great choice when you want to sound polished and reliable.
While not an idiom itself, it is part of several key structures:
- 사실을 토대로: Based on facts.
- 경험을 토대로: Based on experience.
- 데이터를 토대로: Based on data.
- 의견을 토대로: Based on opinions.
- 계획을 토대로: Based on a plan.
Grammatically, ~을 is the object marker, and 토대로 acts as an adverbial phrase. It modifies the verb that follows it.
Pronunciation is straightforward: eul-to-dae-ro. Ensure you emphasize the 'to' to keep the rhythm clear. It rhymes loosely with words like 대로 (as it is) or 노래로 (with a song).
Fun Fact
Used in architecture before it was used in language.
Pronunciation Guide
Sounds like 'toe-deh-ro'
Sounds like 'toe-deh-ro'
Common Errors
- Mispronouncing 'o' as 'u'
- Dropping the 'r' sound
- Stressing the wrong syllable
Rhymes With
Difficulty Rating
Easy to read
Easy to write
Easy to say
Easy to hear
What to Learn Next
Prerequisites
Learn Next
Advanced
Grammar to Know
Object particle 을
사과를 먹다
Adverbial particle 로
학교로 가다
Noun modification
예쁜 꽃
Examples by Level
이것은 사실을 토대로 만들었어요.
This / facts / based on / made.
Used with nouns.
경험을 토대로 결정했습니다.
데이터를 토대로 분석했어요.
그 책을 토대로 영화를 만들었어요.
의견을 토대로 수정했습니다.
계획을 토대로 진행합니다.
연구를 토대로 발표해요.
기록을 토대로 작성했어요.
설문을 토대로 결론을 냈어요.
8 examples
8 examples
8 examples
8 examples
Common Collocations
Idioms & Expressions
"토대를 닦다"
To lay a foundation
그는 성공의 토대를 닦았다.
formal"토대가 튼튼하다"
The foundation is strong
우리 회사는 토대가 튼튼하다.
neutral"토대를 흔들다"
To shake the foundation
그 사건은 사회의 토대를 흔들었다.
formal"토대를 마련하다"
To prepare a foundation
새로운 사업의 토대를 마련했다.
formal"토대를 다지다"
To solidify the foundation
기본기를 통해 토대를 다졌다.
neutral"토대를 허물다"
To destroy the foundation
신뢰의 토대를 허물지 마라.
formalEasily Confused
Same meaning.
None, they are synonyms.
둘 다 똑같아요.
Similar meaning.
기반 is more structural/systemic.
기술 기반으로.
Formal synonym.
근거 is more legal/reason-based.
법적 근거하여.
Used in similar structures.
전제 is a prerequisite condition.
합의를 전제로.
Sentence Patterns
Noun + 을 토대로 + Verb
경험을 토대로 말합니다.
Noun + 을 토대로 + Noun + 을 작성하다
데이터를 토대로 보고서를 작성합니다.
Noun + 을 토대로 + 결정하다
사실을 토대로 결정했습니다.
Noun + 을 토대로 + 분석하다
조사를 토대로 분석합니다.
Noun + 을 토대로 + 계획하다
의견을 토대로 계획합니다.
Word Family
Nouns
Related
How to Use It
9
Formality Scale
Common Mistakes
It is a set phrase, not a particle combination.
Usually implies 'based on' (direction/method) rather than location.
Redundant. Use one or the other.
Grammatically incorrect verb form.
Incorrect adjective usage.
Tips
When Native Speakers Use It
Use it whenever you need to cite a source.
Grammar Shortcut
Always keep it as [Noun] + 을 + 토대로.
Don't Make This Mistake
Don't add extra particles like '에' after it.
Study Smart
Pair it with nouns like '데이터', '사실', '경험'.
Did You Know?
It is one of the most common phrases in Korean academic writing.
Memory Palace Trick
Visualize a 'toe' on a 'road' (toe-dae-ro) as your starting point.
Cultural Insight
It reflects the Korean value of evidence-based communication.
Say It Right
Keep the 'o' sounds clear and rounded.
Practice
Write your daily journal using '오늘 있었던 일을 토대로...'
Professionalism
Using this phrase instantly makes you sound more professional.
Memorize It
Mnemonic
Toe-Day-Ro: Imagine standing on your toes (toe) all day (day) on a solid road (ro).
Visual Association
A house being built on a very strong stone base.
Word Web
Challenge
Write 3 sentences today using '...을 토대로'.
Word Origin
Sino-Korean
Original meaning: Earth platform
Cultural Context
None.
Equivalent to 'based on' or 'on the basis of'.
Practice in Real Life
Real-World Contexts
At work
- 보고서를 토대로...
- 회의를 토대로...
- 데이터를 토대로...
At school
- 연구를 토대로...
- 자료를 토대로...
- 책을 토대로...
In news
- 사실을 토대로...
- 조사를 토대로...
- 기록을 토대로...
In daily life
- 경험을 토대로...
- 의견을 토대로...
- 생각을 토대로...
Conversation Starters
"어떤 경험을 토대로 그 결정을 내렸나요?"
"데이터를 토대로 분석한 결과가 어떻게 나왔나요?"
"이 보고서는 무엇을 토대로 작성했나요?"
"사실을 토대로 이야기해 줄 수 있나요?"
"어떤 연구를 토대로 이 이론이 나왔나요?"
Journal Prompts
오늘 있었던 일을 토대로 내일 계획을 세워보세요.
어제 읽은 책을 토대로 짧은 감상문을 써보세요.
나의 경험을 토대로 내가 배운 점을 적어보세요.
들은 이야기를 토대로 나의 생각을 정리해보세요.
Frequently Asked Questions
8 questionsYes, but it sounds slightly formal.
Yes, they are almost identical.
No, it must follow a noun.
Extremely common.
No.
Usually not, use '토대' for that.
No, it is a very consistent pattern.
In very intimate, slang-heavy conversations.
Test Yourself
사실을 ___ 만들었습니다.
The correct particle is '로'.
Which means 'based on'?
토대로 is the foundation phrase.
Is '토대로' used for locations?
It is used for abstract foundations.
Word
Meaning
Both are common collocations.
Data + based on + report + made.
Score: /5
Summary
Using ~을 토대로 makes your speech sound logical, professional, and well-supported.
- Means 'based on'.
- Used for formal/academic contexts.
- Follows a noun.
- Synonym of '바탕으로'.
When Native Speakers Use It
Use it whenever you need to cite a source.
Grammar Shortcut
Always keep it as [Noun] + 을 + 토대로.
Don't Make This Mistake
Don't add extra particles like '에' after it.
Study Smart
Pair it with nouns like '데이터', '사실', '경험'.
Related Content
More academic words
입체적
B2Having a three-dimensional effect or examining something from multiple perspectives rather than a single flat view. It implies a comprehensive and detailed analysis.
~에 관해
B1About, concerning.
~에 대하여
A2Concerning or regarding a particular subject; about.
~대해
A2About; concerning; regarding.
~에 관하여
A2Regarding, concerning, about (a topic).
~에 대해(서)
A1Indicates the topic or subject of discussion, meaning 'about' or 'regarding'.
무엇보다
A2More than anything else; above all.
결석생
A2A student who is absent from class.
추상화하다
B2To consider something theoretically or separately from its physical reality. It involves extracting general principles from specific examples.
추상
A2Abstraction; the quality of dealing with ideas rather than events.
