Definition of

Tongue-in-cheek

  1. (adj, all) cleverly amusing in tone
    facetious remarks
    tongue-in-cheek advice
  2. (adv, all) in a bantering fashion
  3. (adv, all) not seriously

via WordNet, Princeton University

Synonyms of Tongue-in-cheek

bantering, banteringly, facetious, facetiously, jokingly

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