Here's what rhymes with theatricalizing.
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writhing driving arriving pricing diving thriving slicing conniving tithing dicing knifing striving surviving deriving reviving splicing contriving depriving enticing sacrificing apprenticing streptomycin writing lying riding lighting lining liking rhyming alighting aligning colliding righting liming trying dying fighting applying buying crying firing flying mining climbing dining drying filing guiding hiding lightning shining sliding timing abiding assigning biting citing hiring signing typing frying gliding obliging piling piping tying wiping wiring dyeing hiking plying priming prying siding sighing sighting tiring whining bribing pining siting vying biding biking blighting chiding fining griping rifling slighting whiting shying viking eliding knighting maligning priding retyping seining tiding wining finding binding striking underlying smiling acquiring combining deciding supplying winding admiring grinding refining relying residing retiring trifling uniting ageing aspiring blinding confining overlying overriding reciting ascribing compiling complying confiding reclining resigning rewriting spying striding underwriting undying untiring delighting divining minding styling twining underlining hireling repining sniping spiking belying deriding overwriting bridling providing defining describing exciting declining denying designing dividing occupying implying inviting presiding reminding prescribing reconciling replying undermining unifying coinciding conspiring defying edifying expiring inciting inclining purifying stifling beguiling disliking igniting perspiring prophesying ratifying rectifying subsiding transcribing decrying nullifying reuniting unsmiling unwinding codifying enshrining exiling fructifying indicting liquefying ossifying proscribing ramifying recombining gratifying inspiring modifying multiplying terrifying clarifying classifying justifying qualifying signifying horrifying magnifying subscribing testifying verifying amplifying certifying fancying glorifying notifying redefining beautifying expediting inscribing pacifying redesigning subdividing uninviting acidifying calcifying crucifying putrefying typifying unedifying unexciting vilifying identifying specifying simplifying stereotyping diversifying fortifying mortifying sanctifying circumscribing electrifying emulsifying falsifying intertwining mystifying objectifying solidifying stultifying stupefying uninspiring vivifying nonbinding personifying satisfying intensifying quantifying disqualifying exemplifying unsatisfying indemnifying oversimplifying