(せいい)

せいい
noun
sincerity; good faith
1. sincerity; good faith; genuine intention
A sincere, wholehearted attitude or genuine intention to act honestly and fairly. Often used when discussing whether someone is showing genuine effort or commitment in a negotiation, apology, or relationship.
誠意(せいい)()せる。
To show sincerity.
(かれ)誠意(せいい)(つた)わった。
His sincerity got through to them.
誠意(せいい)()って対応(たいおう)すれば、相手(あいて)理解(りかい)してくれる。
If you respond with sincerity, the other person will understand.

Refers to a genuine, heartfelt attitude — the quality of being honest and earnest in one's dealings with others. It implies not just words but a willingness to back them up with action.

COMMON COLLOCATIONS:

  • 誠意(せいい)()せる — to show sincerity
  • 誠意(せいい)()って — with sincerity, in good faith
  • 誠意(せいい)ある対応(たいおう) — a sincere response
  • 誠意(せいい)()りない — lacking in sincerity

USAGE:
Often used in business and formal contexts when evaluating whether someone is genuinely committed — for example, in negotiations, apologies, or customer service. The phrase 誠意(せいい)()せてください is a strong request meaning "show me you're serious" and can imply a demand for concrete action (such as compensation).

SIMILAR WORDS:

  • 真心(まごころ) — heartfelt sincerity; warmer and more personal than 誠意(せいい)
  • 誠実(せいじつ) — honest, faithful; describes a person's character rather than a specific attitude or gesture