後こう悔かい

noun, noun or participle which takes 'suru', transitive verb, intransitive verb, noun which may take the genitive case particle 'no'

regret; remorse; repentance

A deep, often painful feeling of wishing one had acted differently. Used as a noun, with する to mean 'to regret', and as a no-adjective (後悔の念, etc.).

• あの時とき、正しょう直じきに話はなせばよかったと後こう悔かいしている。

  I regret not having spoken honestly at that time.