Translation guide
Expressing that something is the worst, most terrible, or most unpleasant. Covers superlative badness, extreme dislike, and colloquial intensifiers.
To say that something is the worst in quality, performance, or outcome.
The most common and versatile way to say 'the worst'. Can be used as a noun or na-adjective. Works for situations, things, people, and outcomes.
今日は最悪の一日だった。
Today was the worst day.
この映画は最悪だ。
This movie is the worst.
Literally 'the lowest', often used for people's behavior or character, meaning despicable or the worst kind of person. Also used for quality.
When describing a person, 最低 implies moral judgment (scum, jerk). For neutral 'worst at something', use 最悪 or other options.
彼は最低な人間だ。
He's the worst kind of person.
このサービスは最低だ。
This service is the worst.
Literally 'the most bad'. A straightforward, slightly more formal or descriptive way to say 'the worst'. Often used in comparisons.
これが一番悪い結果だ。
This is the worst result.
Loanword from English 'worst'. Used in rankings, lists, or specific contexts like 'worst case'.
ワーストケースを想定する。
Assume the worst-case scenario.
To express strong personal dislike, that something is awful or terrible from a subjective standpoint.
Also used for subjective feelings. Can be an interjection: 'This sucks!' or 'How awful!'.
最悪！財布を忘れた。
This is the worst! I forgot my wallet.
Means 'terrible', 'awful', 'cruel'. Often used for treatment, weather, or situations. Not strictly 'the worst' but conveys strong negativity.
Can be an exclamation meaning 'That's awful!' or 'You're the worst!'.
To emphasize that something is extremely bad or the most extreme version of something negative.
Adverbial form meaning 'worstly' or 'in the worst way'. Used to modify adjectives or verbs.
最悪にまずい料理。
The worst-tasting food.
Slangy intensifier: 'super worst' or 'the absolute worst'.
あのライブは超最悪だった。
That concert was the absolute worst.
最悪 (saiaku) is the general 'worst' for situations, things, and outcomes. 最低 (saitei) often carries a moral judgment when used about people, meaning 'despicable' or 'the lowest scum'. For 'the worst movie', both can work, but 最低 implies stronger personal disgust. For 'the worst person', 最低 is more natural if you mean morally bad; use 最悪 if you mean incompetent or unpleasant.
あの俳優は最悪だ。（演技が下手）
That actor is the worst. (bad at acting)
あの俳優は最低だ。（人間性が嫌い）
That actor is the worst. (I hate him as a person)
Avoid directly translating 'the worst' as 最も悪い (mottomo warui) in casual speech; it sounds stiff and overly literal. Use 最悪 or 最低 instead.
I had a terrible experience. / The worst thing happened to me.
最低！そんなことするなんて。
You're the worst! How could you do that?