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誠心誠意, せいしんせいい

  • seishinseii

Definition

adverb (fukushi), noun (common) (futsuumeishi), nouns which may take the genitive case particle `no'

  • in all sincerity
  • with one's whole heart
  • whole-hearted devotion

Examples of 誠心誠意,せいしんせいい in a Sentence

誠心誠意女に尽くした。
He devoted himself whole-heartedly to her.

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