noun, noun which may take the genitive case particle 'no'
no regrets; without regrets
Used to express that one has no regrets about a past action or decision. Often appears in set phrases like 悔いなしの人生.
He lived a life with no regrets.
I have no regrets about this choice.
Alternate kanji spelling using 無し.
Compound of 悔い (regret) + なし (without). The exact historical derivation is uncertain, but the phrase is conventionally associated with the meaning 'no regrets'.