half-arsed /ˌhɑːf ˈɑːst◂ $ ˈhæf ɑːrst/
British English,
half-assed /ˌhɑːf ˈæst $ ˈhæf æst/
American English adjective [only before noun] informal1. doing something without making much effort:
He made a half-arsed attempt to clean up after the party.2. completely stupid:
What a half-assed idea! [TahlilGaran] Dictionary of Contemporary English ▲