Here's what rhymes with imperturably.
interminably abominably immutably immeasurably indisputably inscrutably irrefutably Words that almost rhyme with imperturably
badly gladly sadly flatly madly haply cadre rally valley lastly manly galley radii shabby sally tally flabby lanky dally lackey laddie lassie tabby tali cabbie cabby raspy ratty bally blackly crabby crassly gangly ramie randy carry happy fancy fatty frankly sandy brandy candy handy nasty taxi vastly daddy ghastly glassy grassy paddy chassis crafty dandy patchy shaggy baggy blandly blankly canny clammy craggy flashy grandly hackney nanny savvy shanty waxy bandy brassy catchy chatty classy cranky cranny grandee granny lamprey tacky trashy bani caddy catty chancy drafty draughty fanny hanky maxi nappy natty navvy pansy panty patty sappy sassy scraggly straggly taffy tangy wacky batty caddie campy chanty scanty verbally fiancee finale pantry abstractly granary gantry scratchy snappy palfrey rectally scraggy scrappy exactly unhappy uncanny angioplasty chimpanzee yeomanry intermarry polyandry vacantly vigilante bastardy inaptly pederasty efficacy communally compactly miscarry profligacy homeopathy necromancy inefficacy osteopathy sycophancy satisfactory homoeopathy