You use this phrase to show you are annoyed. It means 'it's not like...' or 'you are not...'. You say it when someone is acting in a way that does not make sense.
Noun + ではあるまいしPrimary
な-Adjective + ではあるまいし
Clause + わけ + ではあるまいし
You use this phrase to show you are annoyed. It means 'it's not like...' or 'you are not...'. You say it when someone is acting in a way that does not make sense.
子供ではあるまいし、そんなことで泣くのはやめなさい。
You're not a child, so stop crying over something like that.
昔の武士ではあるまいし、今時そんな考え方は古いよ。
You're not a samurai from the old days, you know. That way of thinking is outdated.
誰も見ていないわけではあるまいし、もう少し行儀よくしなさい。
It's not as if nobody is watching, so try to behave a little better.
神様ではあるまいし、未来のことなんて分かるはずがない。
I'm not a god, so there's no way I would know what the future holds.
もう新人ではあるまいし。同じミスを繰り返すのは許されないぞ。
You're not a rookie anymore. Repeating the same mistake is unforgivable!
This is more formal than 〜じゃあるまいし. You use it in writing. Older people use it more. It is not as casual. It is much more formal than 〜じゃねえし.
Don't use this when you want to change the tense. For example, you can't say "〜ではあったまいし" for past tense.
Use this when you want to criticize someone. You say what they are not. This shows their actions are wrong. It is like saying 'because you are not X, you should not do Y'.
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