Blondest rhymes with:
fondest, fondest, grandest, kindest, propagandist, soundest, buddhist, coldest, eldest, encyclopedist, fondest, grandest, hardest, kindest, loudest, methodist, mildest, modest, oddest, oldest, orthopedist, prejudiced, propagandist, proudest, rudest, saddest, sadist, shrewdest, soundest, stupidest, weirdest, widest
Blondest sounds like:
blindside, blindsided, bluntest