Also found in: Thesaurus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.unplayful - completely lacking in playfulnessunplayful - completely lacking in playfulness  
playful - full of fun and high spirits; "playful children just let loose from school"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in classic literature ?
Marlow assured me that the Fyne marriage was perfectly successful and even happy, in an earnest, unplayful fashion, being blessed besides by three healthy, active, self-reliant children, all girls.
They are being repressed into an ongoing lack of repression, becoming just unplayful enough to be able to go on playing.
In particular, Einstein's unplayful god was more akin to Spinoza's ordered nature, rather than to Newton's personified ruler.