See tomfoolery in Webster's New World Roget's A-Z Thesaurus II
noun
Foolish behavior:
absurdity, folly, foolery, foolishness, idiocy, imbecility, insanity, lunacy, madness, nonsense, preposterousness, senselessness, silliness, zaniness. (Informal) craziness. See abilityAnnoying yet harmless, usually playful acts:
devilry, deviltry, diablerie, high jinks, impishness, mischief, mischievousness, prankishness, rascality, roguery, roguishness. (Informal) shenanigan (often used in plural). See goodSomething that does not have or make sense:
balderdash, blather, bunkum, claptrap, drivel, garbage, idiocy, nonsense, piffle, poppycock, rigmarole, rubbish, trash, twaddle. (Informal) tommyrot. (Slang) applesauce, baloney, bilge, bull1, bunk2, crap, hooey, malarkey. See knowledge
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