motivator
🇺🇸
/ˈməʊtɪveɪtər/
🇬🇧
/ˈməʊtɪveɪtə(r)/
A motivator is someone or something that gives you a reason to do something, especially when it's difficult.
The coach's inspiring words were a motivator for the team to train harder.
教練鼓舞人心的話語是激勵團隊更努力訓練的動力。