言而不信

yán'érbùxìn

synonym of 言而無信 /言而无信 (yán'érwúxìn, “to fail to keep faith; to go back on one's word”)

Wiktionary

Entry Composition

1 言 yán
  1. words
  2. speech
  3. to say
  4. to talk
2 而 ér
  1. and
  2. as well as
  3. and so
  4. but (not)
  5. yet (not)
  6. (indicates causal relation)
  7. (indicates change of state)
  8. (indicates contrast)
3 不信 bùxìn
  1. (Buddhism) unbelief or non-faith; inability of a person to generate tacit belief or confidence in a teacher and the doctrines that is necessary to undertake practice in earnest
  2. (literary) to not have credit; to be untrustworthy
  3. to not have credit; to be untrustworthy
  4. to not trust; to not believe
  5. unbelief or non-faith; inability of a person to generate tacit belief or confidence in a teacher and the doctrines that is necessary to undertake practice in earnest