A dumb ox American old-fashioned informal noun
Used to refer to someone, especially man who is big in size and stupid
Are you putting your faith in a dumb ox?
He is called a dumb ox by his classmates because of his inability to learn basic math.
Extremely stupid
Very stupid, or silly
Stupid or crazy
(n): a fool person,
(adj): stupid, foolish, silly
A stupid person or an idiot
The noun phrase appeared around the 1700s in digitalized printed sources.
Used when something unpleasant has happened that has spoilt what you intended to do
Oh, no, that’s torn it! I’ve left my wallet at home!