| feverish(adjective, hot, agitated, heated, overexcited) |
| fierce(adjective, violent, mad, vicious, unreasonable) |
| fiery(adjective, agitated, heated, overexcited, panic-stricken) |
| flawed(false, unstable, ill, shaky, insane) |
| flighty(adjective, foolish, crazy, irrational, outrageous) |
| flipped(adjective, wild, silly, foolish, crazy) |
| flipped out(expression, silly, hot, crazy, mad) |
| freaked out(expression, wild, silly, foolish, crazy) |
| goofy(adjective, silly, foolish, unwise) |
| hot(adjective, enthusiastic, ill, sick, fervent) |
| idiotic(adjective, wild, silly, foolish, stupid) |
| impassioned(adjective, agitated, heated, overexcited, panic-stricken) |
| incensed(adjective, violent, mad, fierce, unreasonable) |
| mad as a March hare(expression, idiom, silly, foolish, mad) |
| mad as a hatter(expression, idiom, silly, foolish, mad) |
| mentally ill(adjective, unwell) |
| mentally strange(expression, silly, foolish, mad, insane) |
| neurotic(adjective, agitated, overexcited, panic-stricken) |
| nonsensical(adjective, crazy, mad, odd, insane) |
| not right(expression, idiom, insanity) |