Here's what rhymes with thricely.
nicely precisely concisely imprecisely Words that almost rhyme with thricely
lively lithely wisely blithely wifely unwisely likely slightly lightly rightly icy idly slyly wryly ripely highly widely finely tightly brightly timely ivy nightly dryly knightly shyly slimy spicy sprightly wily ibi ici idee iri iti feisty flighty limy pricey vilely dicey sightly smiley limey showily snidely styli sprightlier tritely lichee spryly feistier knightlier sightlier kindly mighty tiny unlikely ninety mildly politely psyche wildly blindly shiny tidy widi grimy hyphae spiny spiky sublimely uprightly wiki nightie piney piny stymie supinely whiny whitey nighty siree spiry skivvy blimey chivy crikey stripey stymy divinely untimely almighty unsightly benignly forthrightly chenille vaginae eruditely unsightlier untidy expiry unkindly contritely impolitely inquiry enquiry bolsheviki