also: しりがあおい · けつがあおい
ケツが青い · i-adjective
| Form | Positive | Negative |
|---|---|---|
| Dictionary | ケツが青い | ケツが青くない |
| Polite | ケツが青いです | ケツが青くないですalso ケツが青くありません |
| Past polite | ケツが青かったです | ケツが青くなかったですalso ケツが青くありませんでした |
| Past | ケツが青かった | ケツが青くなかった |
| Te-form | ケツが青くて | ケツが青くなくて |
| Adverbial | ケツが青く | |
| Conditional | ケツが青ければ | ケツが青くなければ |
| Tara conditional | ケツが青かったら | ケツが青くなかったら |
wet behind the ears; inexperienced; immature
Idiomatic expression literally meaning 'butt is blue', from the bluish tinge of children's buttocks. Used to describe someone who is inexperienced, immature, or still a novice.
We can't entrust such an important job to a newbie who's still wet behind the ears.
He's still green, but he's motivated.
Common colloquial spelling using katakana ケツ for 'butt'. The reading ケツがあおい is the most natural for this form.
Kanji spelling using 尻. Can be read as しりがあおい or けつがあおい, but しりがあおい is more standard for this kanji form.
Kanji spelling with the reading けつがあおい. Less common; the katakana form ケツが青い is preferred for this reading.
From the bluish tinge of children's buttocks, implying youth and inexperience. The exact historical derivation is uncertain, but the phrase is a well-established idiom.