1. An attempt made with little enthusiasm, effort, or conviction; a lukewarm or half-committed effort
He made a half-hearted try at learning the guitar but gave up after two weeks.
Ele fez uma tentativa morna de aprender violão, mas desistiu após duas semanas.
2. An effort that lacks genuine commitment or passion
Her half-hearted try to apologize was not accepted because it seemed insincere.
Sua tentativa morna de se desculpar não foi aceita porque parecia insincera.