sat1 seon3失信

Jyutpingsat1 seon3
Yalesāt seun
動詞Rare

Definition

To break one's promise; to go back on one's word.

neutralpeoplecommunication

How it's used

Carries a formal and serious tone, often used when someone's reputation or integrity is at stake. Unlike casual phrases like 反口 which focus on the act of changing one's mind, 失信 emphasizes the loss of trust resulting from the broken commitment. It is frequently used in professional or moral contexts rather than in trivial everyday situations.

Examples

Don't go back on your word once you've promised someone.
He always breaks his promises, who would still dare to trust him?

Common phrases

bankruptcy of credibility
to lose the trust of others

Common mistake

Learners often use this as a direct translation for any instance of changing a plan, but it is too heavy for minor things like cancelling a coffee date. Use 反口 for casual situations where someone simply changes their mind.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector