Translation guide
Used in negative sentences to emphasize that something is not true at all, not even a little bit. In Japanese, this is expressed through specific negative-polarity items, adverbial phrases, or sentence-ending patterns rather than a single direct translation.
Emphasize a complete lack or negation, equivalent to 'not ... at all'.
Literally 'not even a little'. A common and versatile way to say 'not in the slightest'. Place before the negated verb or adjective.
I don't understand what he's saying in the slightest.
That movie wasn't interesting in the slightest.
Means 'not at all'. Very common in casual speech. Can sound emphatic; use with care in formal settings.
I'm not bothered in the slightest.
I don't believe that story in the slightest.
Stronger than 全然, meaning 'absolutely not' or 'not at all'. Suitable for both spoken and written Japanese.
I couldn't understand his explanation in the slightest.
Colloquial equivalent of 少しも〜ない. Often used in spoken Japanese to mean 'not at all'.
I'm not tired in the slightest.
Literally 'not even a particle'. Very emphatic, often used in written or formal contexts to deny something completely.
There is not the slightest doubt.
Strengthen a negative description, like 'not ... at all' with adjectives.
Works well with adjectives like 面白くない (not interesting), 嬉しくない (not happy).
I'm not satisfied with the result in the slightest.
Very casual, meaning 'not even a tiny bit'. Often used with emotions or quantities.
I'm not scared in the slightest.
Express 'if at all' or 'even a little' in negative or hypothetical contexts.
Used in conditionals to mean 'if even a little'. Often followed by a negative or cautious statement.
If you have any doubt in the slightest, you should stop.
There is no single Japanese word for 'in the slightest'. Translating it literally as わずかに or ほんの少し will not convey the emphatic negative meaning. Always pair these expressions with a negative verb or adjective.
I don't understand in the slightest.
全然 is more common in everyday speech, while まったく is slightly more formal and emphatic. 全然 can sometimes be used in positive sentences in very casual speech (e.g., 全然いいよ 'totally fine'), but this is considered informal.
No problem at all. (casual)
I'm not worried in the slightest.
That doesn't bother me in the slightest.
He didn't help in the slightest.
There is no problem whatsoever. (polite)