Here's what rhymes with sinth.
plinth hyacinth labyrinth Words that almost rhyme with sinth
since sins ins fins inns shins thins things skins hymns pins sings wins spins bins evince rinse tins chins mince wince gins shims kings prince rings wings limbs lymph twins swings nymph rims stings whims flings grins slings swims hairpins quince dims gyms skims tings wrings begins brings convince springs strings clings florins violins brims trims minims javelins pseudonyms underpins offsprings wellsprings fifth filth scythe myth sixth width pith smith writhed writhe therewith herewith forthwith wherewith monolith silversmith