Puckishness is a word that describes a behavior that is mischievous, playful, and full of rascality. If you are looking for other synonyms that capture the meaning of puckishness, you might consider words such as impishness, roguishness, devilishness, prankishness, whimsicality, or mischievousness. Other synonyms that capture the playful nature of puckishness include lightheartedness, frivolity, jocularity, and cheerfulness. Each of these words represents a different aspect of puckishness, but they all describe a fun-loving, mischief-making behavior that exudes a sense of humor and playfulness. If you want to convey the same kind of playful spirit, experiment with using some of these synonyms in your writing or conversation.