he, she, etc. wouldn't say boo to a goose

wouldn't say boo to a goose

Is particularly shy, nervous, or diffident. Primarily heard in UK, Australia. My brother is a very sweet, warm-hearted man who wouldn't say boo to a goose. How can you suspect that he committed this crime?
See also: boo, goose, say

he, she, etc. wouldn’t say ˌboo to a ˈgoose

(informal) somebody is very shy and afraid of upsetting or annoying people: How could he ever succeed in politics? He wouldn’t say boo to a goose.
People shout Boo! when they want to surprise or frighten somebody.
See also: boo, goose, say
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