| mentally ill(expression, cuckoo) |
| neural |
| neurotically |
| nut(noun, mad, lunatic, schizophrenic, maniac) |
| on edge(expression, adjective, upset, anxious, crazy) |
| overexcited(adjective, upset, crazy, nervous, high) |
| overstrung(adjective, upset, crazy, nervous, high) |
| overworked(adjective, upset, crazy, nervous, high) |
| screwy |
| sociopath |
| spent(adjective, upset, crazy, nervous, high) |
| steamed up(expression, adjective, upset, crazy, nervous) |
| stirred(adjective, upset, crazy, nervous, high) |
| strung-out(adjective, upset, crazy, nervous, high) |
| temperamental(adjective, nervous, emotional, restless, unreliable) |
| tired(adjective, upset, crazy, nervous, high) |
| touched(crazy, cuckoo, queer) |
| unhealthy(adjective, anxious, fearful, preoccupied, fixated) |
| unhinged(adjective, crazy, cuckoo, queer) |
| valetudinary(noun, worrier, nutter, valetudinarian) |