can't say boo to a goose

can't say boo to a goose

Is particularly shy, nervous, or diffident. My brother is a very sweet, warm-hearted man who can't say boo to a goose. How can you suspect that he committed this crime?
See also: boo, goose, say
Farlex Dictionary of Idioms.

can't say boo to a goose

Rur. shy and not talkative. I was surprised to see Joe so talkative at the party. Usually he can't say boo to a goose. She's a quiet little kid. Can't say boo to a goose.
See also: boo, goose, say
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • he, she, etc. wouldn't say boo to a goose
  • wouldn't say boo to a goose
  • not say boo to a goose
  • not say boo (to anyone)
  • not say boo to a fly
  • wouldn't harm a fly
  • he, she, etc. wouldn't harm/hurt a fly
  • wouldn't hurt a fly
  • not hurt a flea
  • not hurt a fly