Princeton's WordNet

1. facetiously, jokingly, tongue-in-cheek(adverb)

   not seriously

   "I meant it facetiously"

Wiktionary

1. facetiously(Adverb)

   In a facetious or flippant manner; in a manner that treats serious issues with deliberately inappropriate humor

2. facetiously(Adverb)

   In a pleasantly humorous or playful fashion.

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• brincalhonamentePortuguese (BR)
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• alaycı bir şekildeTurkish
• 滑稽地Chinese (Trad.)
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• شوخی سےUrdu
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• 滑稽地Chinese (Simp.)