1) 精一杯せいいっぱい Parts 精 一杯 #3,531 Link copied! Common せいいっぱい [1] せいいっぱい [3] Meaning Shirabe ① Noun the best one can do; one's best effort その速はやさで精一杯せいいっぱいですか。 Is that as fast as you can go? ② Adverb with all one's might; to the best of one's ability; as hard as possible 私わたくしは会社かいしゃのために精一杯せいいっぱいやってきた。 I've given my best for the company. Kanji 精 セイ refined, ghost, fairy 一 イチ one, one radical (no.1) 杯 ハイ counter for cupfuls, wine glass, glass Forms 精一杯#3,531精一杯せいいっぱいせいいっぱいせいいっぱい