square peg in a round hole

square peg in a round hole  {n.},  {informal}
A person who does not fit into a job or position; someone who does not belong where he is.
Arthur is a square peg in a round hole when he is playing ball.
George likes to work with his hands. When it comes to books, he's a square peg in a round hole.
- Sometimes used in a short form, square peg.
Categories: {informal} {n.}

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