言行不一

yánxíngbùyī
(idiom) to say one thing and do another

CEDICT

one's actions do not match up to one's words

Wiktionary

說的話語和實際行動存在矛盾

維基詞典

Entry Composition

1 言行 yánxíng
  1. words and actions
  2. what one says and what one does
2 不一 bùyī
  1. to vary
  2. to differ

Related entries

行不顧言 xíngbùgùyán to say one thing and do another (idiom)
言行不符 yánxíngbùfú (idiom) to say one thing and do another