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sly

Synonyms of sly in English:

adjective

  • 1 she's getting sly in her old age
    informal foxy, shifty
    British informal fly
    Australian/New Zealand informal shonky
    South African informal slim
    archaic subtle
    rare carny
    [Antonyms] honest, artless
  • 2 he gave her a sly grin
    roguish, mischievous, impish, puckish, playful, teasing, naughty, wicked, waggish;
    Scottish & Northern English informal pawky
  • 3 she took a sly sip of water
  • noun

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    Phrases

    on the sly
    is she meeting some other guy on the sly?
    [Antonyms] openly
    in secret, secretly, furtively, stealthily, sneakily, slyly, surreptitiously, covertly, clandestinely, on the quiet, on the side, behind someone's back, under cover;
    informal on the q.t.
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