At a glance
～くせに means "even though" or "despite", with a feeling of criticism or blame. The speaker complains that someone acts in a way that does not fit a fact about them.
[Verb plain form / い-adj / な-adj + な / Noun + の] + くせに
弟は知っているくせに、教えてくれない。 My little brother knows, but he won't tell me.
How to form it
くせに attaches to the plain form. It is mostly casual and spoken.
| Attaches to | Rule | Example |
|---|---|---|
| Verb | Plain form (present, past, negative) | 知っているくせに / しないくせに / 言ったくせに |
| い-adjective | Plain form | 若いくせに |
| な-adjective | Add な | 下手なくせに |
| Noun | Add の | 学生のくせに |
For the past of な-adjectives and nouns, use だった: 学生だったくせに.