half-assed

[haf-ast, hahf-] /ˈhæfˈæst, ˈhɑf-/
adjective, Slang: Vulgar.
1.
insufficient or haphazard; not fully planned or developed.
2.
incompetent; lacking sufficient ability or knowledge.
Origin
1960-65; half + ass2 + -ed3
British Dictionary definitions for half-assed

half-assed

adjective (US & Canadian, slang)
1.
incompetent; inept
2.
lacking efficiency or organization
Word Origin and History for half-assed
adj.

"ineffectual," 1932, perhaps a humorous mispronunciation of haphazard.

Slang definitions & phrases for half-assed

half-assed

adjective

Ineffectual; incompetent; half-hearted; half-baked: You first ran into censorship problems with the words ''half-assed games''/ So far it's been a half-ass investigation

[1932+; perhaps fr a humorous mispronunciation of haphazard]