(vulgar, slang, the third person plural) they (in the plural); them (in the plural); themselves (in the plural).

(biochemistry) Initialism of argininosuccinate synthase.

(vulgar, slang, the third person singular) they (in the singular); them (in the singular); themself (in the singular); themselves (in the singular).

Poorly or incompetently done. / desultory

simple past tense and past participle of half-ass

bare-bottomed / (informal, by extension) naked, starkers / (informal, by extension) blatant, unashamed

(US, slang, vulgar) Of a person: having a very difficult personality; being a perfectionist.

(derogatory, slang, Canada, US) cowardly; timid; wimpy

(slang, vulgar) Alternative form of fatassed

(humorous) Thoroughly half-assed; that is (from another figurative viewpoint), even less than half-assed.