English version

half-arsed

From Longman Dictionary of Contemporary Englishhalf-arsedhalf-arsed /ˌhɑːf ˈɑːst◂ $ ˈhæf ɑːrst/ British English, half-assed /ˌhɑːf ˈæst $ ˈhæf æst/ American English adjective [only before noun] informal  1 WORK HARDdoing something without making much effort He made a half-arsed attempt to clean up after the party.2 STUPID/NOT SENSIBLEcompletely stupid What a half-assed idea!
Examples from the Corpus
half-arsedWhat half-arsed plot was that berk hatching now?L7 aren't half-arsed rockers, they trample over most of their rivals, they don't want to be blokes.
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