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