(as) quiet as a lamb

(as) quiet as a lamb

Silent, meek, and gentle. I just can't believe that Kate actually yelled at Mike—she's quiet as a lamb! My son, usually so boisterous, always goes as quiet as a lamb during church.
See also: lamb, quiet
Farlex Dictionary of Idioms.

quiet as a lamb

If someone is quiet as a lamb, they are very quiet, calm, or gentle. She's fine, quiet as a lamb. You really mustn't worry. As soon as the organ music began to play, Ellie went quiet as a lamb.
See also: lamb, quiet
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • quiet as a lamb
  • quiet as a mouse
  • quiet as a mouse and *quiet as the grave
  • (as) quiet as a mouse
  • be (as) quiet as a mouse
  • quiet
  • grave
  • so quiet you could hear a pin drop
  • be quiet
  • Be quiet!