Here's what rhymes with nonvariant.
variant invariant Words that almost rhyme with nonvariant
cerement hairiest chariot heaviest recreant veriest lariat scariest cheviot wariest teariest commissariat prescient pettiest sexiest sketchiest fleshiest heftiest fleshliest peppiest sweatiest tetchiest zestiest leggiest wealthiest deadliest lengthiest smelliest dressiest stealthiest peskiest stretchiest testiest preppiest friendliest homeliest cleanliest unfriendliest uncleanliest secretariat comeliest proletariat