| become demented(verb, expression, decline, fail, crack) |
| become psychotic(verb, expression, decline, fail, crack) |
| blow a fuse(verb, expression, idiom, decline, fail) |
| collapse(verb, decline, reduce, fail, crack) |
| crack up(verb, expression, break, crack, collapse) |
| decline(verb, reduce, fail, crack, collapse) |
| degenerate(verb, reduce, deteriorate, decay, worsen) |
| derange(verb, decline, fail, crack, collapse) |
| deteriorate(verb, decline, reduce, fail, crack) |
| fail(verb, decline, crack, collapse, disintegrate) |
| flip out(verb, expression, decline, fail, crack) |
| freak out(verb, expression, decline, fail, crack) |
| go bonkers(verb, expression, decline, fail, crack) |
| go crazy(verb, expression, decline, fail, crack) |
| go nuts(verb, expression, decline, fail, crack) |
| go off deep end(verb, expression, idiom, decline, fail) |
| go off rocker(verb, expression, idiom, decline, fail) |
| go out of mind(verb, expression, idiom, decline, fail) |
| go to pieces(verb, expression, idiom, decline, fail) |
| have breakdown(verb, expression, decline, fail, crack) |