a square peg (in a round hole)
US /ə skwɛr pɛɡ (ɪn ə raʊnd hoʊl)/
UK /ə skwɛr pɛɡ (ɪn ə raʊnd hoʊl)/
1.
a person who is not suited to a particular situation or job
:
•
He's always felt like a square peg in a round hole in his family of artists.
•
Trying to make him a manager is like putting a square peg in a round hole; he's much better at technical work.