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"
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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.
In particular, Einstein's unplayful god was more akin to Spinoza's ordered nature, rather than to Newton's personified ruler.
One might view the constant refrain of "we anarchists" throughout The Weakness of God as the seriously playful work of the ironist, since what frequently passes as acceptably orthodox seems decidedly unplayful, far too confident in its ability to trace origins, establish historical continuities, and monitor boundaries.