butter wouldn’t melt in his mouth

butter wouldn’t melt in his mouth \ˈbʌ.tə wʊd.n̩t mɛlt ɪn hɪz maʊθ\

1. Il semble parfaitement innocent, on pourrait lui donner le bon Dieu sans confession. (littéralement : « Le beurre ne fondrait pas dans sa bouche. »)
   • Why I know – that though he looks as if butter wouldn’t melt in his mouth, cheese won’t choke him. — (Charlotte Smith, The Old Manor House)
   • You’d think butter wouldn’t melt in your mouth said Heron. But I’m afraid you’re a sly dog. (James Joyce, Portrait of the Artist as a Young Man)
   • One of the first things the officers did, was to collar me - for the parties to the robbery weren’t to suppose yet, that I was anything but a Butcher - on which the landlord cries out, "Don’t take HIM," he says, "whatever you do! He’s only a poor young chap from the country, and butter wouldn’t melt in his mouth!" — (Charles Dickens, The Detective Police)

• butter
• melt
• mouth