Oddest rhymes with:
modest, blondest, buddhist, coldest, eldest, encyclopedist, fondest, grandest, hardest, kindest, loudest, methodist, mildest, modest, oldest, orthopedist, prejudiced, propagandist, proudest, rudest, saddest, sadist, shrewdest, soundest, stupidest, weirdest, widest
Oddest sounds like:
outcast, outguessed, outset, outside, outsized, outweighed