appearances can be deceiving; don't judge a book by its cover
Proverb meaning that outward appearance does not reflect true character or ability. Often used when someone's actions or nature differ from what their looks suggest.
He looks scary, but he's actually very kind. Appearances can be deceiving, right?
That tiny shop serves such delicious ramen—you really can't judge a book by its cover.
A shorter adjectival phrase with the same meaning, often used as '見かけによらない人' (a person who is not what they seem).
Standard modern spelling of the proverb.
Alternate kanji spelling using 掛 and 依; less common but attested.
A traditional Japanese proverb. The exact origin is uncertain, but it reflects a common cultural observation that outward appearance is not a reliable guide to inner qualities.