appearances are deceptive
proverb Appearances do not always convey accurate information about a person or thing. That house sure looks beautiful on the outside, but appearances are deceptive. What did the inspector say about the foundation? Sure, she seems nice, but appearances are deceptive. I don't trust anyone who acts happy all the time. I just can't shake the notion that appearances are deceptive, you know?
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.