half-heart ‧ ed /ˌhɑːf ˈhɑːtəd◂ $ ˌhæf ˈhɑːr-/ BrE AmE adjective
done without much effort and without much interest in the result:
Congress has made half-hearted attempts at finance reform.
—half-heartedly adverb
HALF-HEARTED
Meaning of HALF-HEARTED in English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012