やくだで始まる言葉

やくだつ【役立つ】

パソコンの知識が就職に非常に役立ったMy knowledge of personal computers proved to be very useful in getting a job.

やくだてる【役立てる】

彼の提言を何とか役立てたいI want to find a way to 「put his suggestion to good use [make use of his suggestion].