C2 adjective /ˌhæfˈhɑːr.tɪd/
halfhearted
निरुत्साही
Meaning
lacking enthusiasm or determination; unenthusiastic
Example
His halfhearted attempt to study did not bring good results.
उसकी निरुत्साही प्रयासों से अच्छे परिणाम नहीं आए।