I know this is probably a stupid question, but 嫌だ was in a song I was listening too. Is this incorrect usage? I know 嫌い means hateful but you don't drop the い to add だ do you?
In this case, 嫌 is not used as the adjective 嫌｛きら｝い but as an adjective, 嫌｛いや｝な. See for example weblio. Furthermore, 嫌{いや}だ is pretty much a set phrase, meaning both:
- Unpleasantness, discomfort
- To refuse / to avoid
And by the way, 嫌{きら}い as hateful is not the most common sense. My dictionary lists:
- Dislike, hate, suspicion
- Dislike, hatred, fear
