Sub.

nut-case; crackpot (probably from pot in a slang sense of "head." сf. crack-brain "crazy fellow" Taras); crazy; jitterbug; madman; food for squirrels; coo coo; crackbrain; crack skull; crazy cat; crazy as a bed-bug (Shmelev Alex); dingbat; squirrel; insane (Voledemar); ding a ling; headcase (КГА); case; creamer (Пример такого употребления имеется в фильме The caretaker 1963 на 86й минуте фильма

imdb.com driven); wacky; loons; schizoid (Val_Ships); wacked. (Shottik)

Игорь Миг

real nut job; nut job; bonker balls; wack-a-doodle; berserk

Amerik.

whacko (Val_Ships); loony tune (Taras); creep (Daisy********); fruiter (Wolverin)

Amerik., Slang.

crazy-cat; wack; ding-a-ling; whack

sicko (ART Vancouver)

Luft.med.

aura; aural

Milit. Jargon

doolally tap (Брит. MichaelBurov); double 4 (MichaelBurov); section 8 (США MichaelBurov)

Slang.

nutter; loony; weinie; fruit-cake; goo-goo; Jerk McGee; knee-jerk; kook; mishoogeh; mishugah; nougat; nut; schiz; schizo; screw-loose; weener; weeney; weenie; weiner; wet sock; whing-ding; whingding; wienie; wing-ding; wingding; luny; trainwreck (a seriously fucked-up person, total mentalist ozzydown); sick puppy (Юрий Гомон); wackjob (2sven); flake; cuckoo; goof; not all there; whack (о человеке vogeler); nutcase; psychopath; whack job (Оскар)

umg.

mental; nuts; psycho; coo-coo; crack-brain; lunatic; crack-skull; loom; nutjob (urbandictionary.com acrogamnon); looneybin (пациент, проживающий в психлечебнице q3mi4); freako (AlexanderGerasimov); nutball (Taras); loon; crack ass (stana); jerko (Taras); psychotic (igisheva); jerk; fruitcake; whackadoodle (vstrugatsky); whackadoodle (Sebastijana); whackadoodle ("I get it all from my mother, though! All of it! We're the second generation wackadoodle." ~ the Wendy Williams show. An alarming number of wackadoodles predict the world will indeed end. He has given credence to a lot of wackadoodle beliefs Sebastijana); wack job ((US) a crazy or extremely eccentric person • He can't even get his story straight on his retirement rank or years of service. His DD214 is buried but I guarantee the reason for his discharge was a section 8 and it would be buried because of that due to medical privacy regs... More proof that his DD214 says he's a wack job. (mysteriousuniverse.org) ART Vancouver)

Volksm.

off the rails (Баян)

"псих" Sub.

umg.

batchy; dotty; loony

психе Sub.