Dictionary
Words, grammatical forms and meanings linked to the ontology.
butter would not melt in someone's mouth en · X
Meanings
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(alt-of, alternative) Alternative form of butter wouldn't melt in someone's mouth.
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: