butter would not melt in someone's mouth

A form of butter wouldn't melt in someone's mouth — The identified person appears to be benign, mild-mannered, or calm (but with an integral suggestion that, to the contrary, they really are untrustworthy, disagreeable, or mean-spirited).

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Meanings

phrase
  1. alternativeAlternative form of butter wouldn't melt in someone's mouth.
    1 more example

    All unmarried women are necessarily in the market; but if they behave themselves properly they make no signs. Now there was Griselda Grantly; of course she intended to get herself a husband, and a very grand one she has got; but she always looked as though butter would not melt in her mouth. It would have been very wrong to call her a marrying girl.

    1861, Anthony Trollope, Framley Parsonage
Cite this entry
APA

butter would not melt in someone's mouth. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/butter%20would%20not%20melt%20in%20someone's%20mouth

MLA

“butter would not melt in someone's mouth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/butter%20would%20not%20melt%20in%20someone's%20mouth. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “butter would not melt in someone's mouth,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/butter%20would%20not%20melt%20in%20someone's%20mouth.

Source: butter would not melt in someone's mouth on Wiktionary, CC BY-SA 4.0.