1) 役立やくだつ #5,709 Inflections of 役立つ Class Godan verb Stem Inflected ending ✕ Link copied! Common N1 Pitch accent や く だ つ [3] Nakadaka Meaning English · JMdict Godan verb Intransitive verb to be useful; to be helpful; to serve the purpose 英語えいごは商業しょうぎょうにおいて役立やくだつ。 English is useful in commerce. Kanji 役 ヤク duty, war, campaign 立 リツ stand up, rise, set up Forms 役立つ#5,709役立やくだつ役だつ#59,413役やくだつやくだつ#147,092やくだつ Learn this word with smart reviews that adapt to you Save word