Last Updated
：2025/12/06
せいしんせいい
Kanji
誠心誠意
Adverb
Japanese Meaning
心から真剣に、うそ偽りなく物事に向き合うさま。
Easy Japanese Meaning
うそやごまかしをせず、こころからまじめにと思って行動するようす
Sense（1）
誠心誠意: in all sincerity; with one's whole heart
（ romanization ）
Quizzes for review
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せいしんせいい
See correct answer
I apologized to him in all sincerity.
See correct answer
私はせいしんせいいと彼に謝罪しました。
Japanese - English
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