礼多人不怪

禮多人不怪
lǐduōrénbùguài
  1. nobody will find fault with extra courtesy (idiom)
  2. courtesy costs nothing

CEDICT

nobody will find fault with extra courtesy; courtesy costs nothing; you won't be blamed for being too polite

Wiktionary

（谚语）对人多行礼仪，别人是不会怪罪的。

重編國語辭典

Entry Composition

1 礼 lǐ
  1. gift
  2. rite
  3. ceremony
  4. propriety
  5. etiquette
  6. courtesy

classifier: 份
2 多人 duōrén many people; multiple people
3 不 bù
  1. no; not so
  2. (bound form) not; un-
=4 怪 guài
  1. bewildering
  2. odd
  3. strange
  4. uncanny
  5. devil
  6. monster
  7. to wonder at
  8. to blame
  9. quite
  10. rather
=4 怪 guài variant of 怪 guài