Here's what rhymes with coincth.
Words that almost rhyme with coincth
thinks links sinks lynx pinks chinks kinks winks rinks jinks jinx minks drinks shrinks sphinx blinks stinks slinks methinks cufflinks fifth myth sixth width filth pith scythe writhed writhe withe smith plinth labyrinth therewith wherewith herewith hyacinth forthwith monolith silversmith