プログレッシブ和英中辞典(第4版)の解説
はげみ【励み】
〔激励〕encouragement ((to do));〔刺激〕a stimulus ((to do));〔誘因〕an incentive ((to do))
この手紙は彼の励みになるだろう
This letter will 「be a great encouragement to [greatly encourage] him.
もうけがなくては働く励みがない
Without profit, there is no incentive to work.
昇進して彼は仕事に励みが出たようだ
The promotion seems to have stimulated [spurred] him to work harder.