Adjective deadpan has 1 sense
  1. deadpan, expressionless, impassive, poker-faced, unexpressive - deliberately impassive in manner; "deadpan humor"; "his face remained expressionless as the verdict was read"
    Antonyms: communicative, communicatory (indirect, via uncommunicative)
,Adverbial deadpan has 1 sense
  1. deadpan - without betraying any feeling; "she told the joke deadpan"
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