1.  shenanigan(n = noun.act) devilment, devilry, deviltry, mischief, mischief-making, mischievousness, rascality, roguery, roguishness - reckless or malicious behavior that causes discomfort or annoyance in others;
is a kind of misbehavior, misbehaviour, misdeed
has particulars: blaze, hell, monkey business, hooliganism, malicious mischief, vandalism

2.  shenanigan(n = noun.act) chicane, chicanery, guile, trickery, wile - the use of tricks to deceive someone (usually to extract money from them);
is a kind of deceit, deception, dissembling, dissimulation
has particulars: dupery, fraud, fraudulence, hoax, humbug, put-on, jugglery

shenanigan, n. (esp. in pl.) colloq.
1 high-spirited behaviour; nonsense.
2 trickery; dubious manoeuvres.

Etymology:
19th c.: orig. unkn.

N  wit, humor, wittiness, sense of humor, attic wit, attic salt, atticism, salt, esprit, point, fancy, whim, drollery, pleasantry, farce, buffoonery, fooling, tomfoolery, shenanigan, harlequinade, broad farce, broad humor, fun, espieglerie, vis comica, jocularity, jocosity, jocoseness, facetiousness, waggery, waggishness, whimsicality, comicality, banter, badinage, retort, repartee, smartness, ready wit, quid- pro-quo, ridicule, jest, joke, jape, jibe, facetiae, levity, quips and cranks, capital joke, canorae nugae, standing jest, standing joke, private joke, conceit, quip, quirk, crank, quiddity, concetto, plaisanterie, brilliant idea, merry thought, bright thought, happy thought, sally, flash of wit, flash of merriment, scintillation, mot, mot pour rire, witticism, smart saying, bon-mot, jeu d'esprit, epigram, jest book, dry joke, quodlibet, cream of the jest, word-play, jeu de mots, play of words, play upon words, pun, punning, double entente, double entendre, quibble, verbal quibble, conundrum, anagram, acrostic, double acrostic, trifling, idle conceit, turlupinade, old joke, tired joke, flat joke, Joe Miller, witty, attic, quick-witted, nimble-witted, smart, jocular, jocose, humorous, facetious, waggish, whimsical, kidding, joking, puckish, playful, merry and wise, pleasant, sprightly, light, spirituel, sparkling, epigrammatic, full of point, ben trovato, comic, zany, madcap, funny, amusing, jokingly, in joke, in jest, in sport, in play, adhibenda est in jocando moderatio, gentle dullness ever loves a joke, leave this keen encounter of our wits, just joking, just kidding, surely you jest!.