butter wouldn't melt in one's mouth
Be overly coy or demure; be insincere. For example, She looked quite innocent, as though butter wouldn't melt in her mouth, but we knew better. Already a proverb in John Heywood's collection of 1546, this metaphoric expression alleges that one is literally so cool that butter inside the mouth would not melt.
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Added to drinking water at concentrations of around one part per million, fluoride ions stick to dental plaque.
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Yet this, in the end, is a book from which one emerges sad, gloomy, disenchanted, at least if we agree to take it seriously.
The fear of violence should not determine what one does or does not say.
The al Qaeda-linked gunmen shot back, but only managed to injure one officer before they were taken out.
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He alludes to it as one of their evil customs and used by them to produce insensibility.
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