〜たほうがいい
Gives advice or a recommendation: 'you had better…', 'you should…'. It suggests that doing the action is the better choice for the listener, often in a specific situation.
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Used in everyday conversation to give advice to friends, family, or colleagues, often with sentence-final よ or と思います. It fits concrete situations such as health, habits, or practical problems. It is firmer than たらどう but less strong than べきだ.
Do not form negative advice with なかったほうがいい; use the ない-form instead, as in 行かないほうがいい.
Note that the た-form here does not indicate past time; it expresses advice about a present or future action.
Learners should soften it with と思います or avoid it toward superiors, because direct advice can sound presumptuous.
- ほうがいいN5「ほうがいい」 has a wider range: with the た form it is this very pattern; it can also take the ない form to advise against something, the dictionary form to state general principles, or 「名詞の」 or an adjective to express comparative preference (e.g. 「青のほうがいい」), in which case it is not necessarily advice.
- 〜ないほうがいいN4「ないほうがいい」 attaches to a verb's ない form and advises the listener not to do something, while 「たほうがいい」 advises doing it; the two share the same tone and register. Negative advice must use 「ないほうがいい」—never 「なかったほうがいい」—though you can instead say 「やめたほうがいい」.
- べきだN2「べきだ」 attaches to the dictionary form and asserts what ought to be done based on reason, common sense, or norms; it is strong and preachy, whereas 「〜たほうがいい」 is a softer suggestion for a specific situation. 「べきだった」 can also express regret about the past.
- たらどうN4「たらどう」 suggests something in question form; it is lighter than 「たほうがいい」, more colloquial, and carries little implication that not doing it will cause trouble. When said with more force, it can sound impatient or reproachful. For plain suggestions the two are often interchangeable.
- ことだN3「ことだ」 attaches to the dictionary form or ない form and is more assertive and preachy than 「たほうがいい」; it is typically used from a superior to a subordinate and often pairs with 「〜たいなら」. It cannot be used toward a superior, whereas 「たほうがいい」 can be softened with 「と思います」.
ほうがいい is the broader frame that also compares nouns or adjectives, while 〜ないほうがいい gives negative advice ('better not'). べきだ expresses stronger moral or logical obligation, たらどう is a softer, more casual suggestion, and ことだ gives authoritative advice, typically from a senior.
