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