peg (one) for (something)(redirected from pegged one for)
peg (one) for (something)
To believe or consider that one definitely is a certain type of person or thing. I pegged her for a total bore when she first started working here, but since getting to know her, she's actually pretty interesting. I'm disappointed, Jake—I never pegged you for a quitter.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.