Synonyms for Caper (same or very similar meaning)
WordNet sense 1 (a crime (especially a robbery)):
job, job
WordNet sense 2 (a playful leap or hop):
capriole
WordNet sense 3 (gay or light-hearted recreational activity for diversion or amusement):
frolic, gambol, play, romp
WordNet sense 4 (a ludicrous or grotesque act done for fun and amusement):
antic, joke, prank, put-on, trick
From the ODE community, based on WordNet
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