of the nature of a prank: a prankish plan.
full of pranks; playful: a prankish child; a prankish kitten.

Origin of prankish

First recorded in 1820–30; prank1 + -ish1
Related formsprank·ish·ly, adverbprank·ish·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for prankish

Historical Examples of prankish