butter wouldn't melt in someone's mouth
The phrase "butter wouldn't melt in someone's mouth" is an idiomatic expression often used to describe a deceptive outward appearance.
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Definition
C1General
(idiomatic, informal)Describes someone who appears innocent or sincere but is actually deceitful or manipulative.
Example
- She acts like butter wouldn't melt in her mouth, but she's the one who started all the rumors.
C1General
(idiomatic, informal)Refers to a person who seems calm and composed, as if incapable of doing anything wrong.
Example
- He looks like butter wouldn't melt in his mouth, but he's actually very mischievous.
Similar
Terms that have similar or relatively close meanings to "butter wouldn't melt in someone's mouth":
melt someone's buttermelt in the mouthsmooth as butterbutter output butter on one's bread