Knost rhymes with:
bossed, bost, brost, cost, dost, drost, jost, kost, pfost, prost, quast, rost, trost
Knost sounds like:
kansas-city, keenest, kenesset, kennecott, kienast, kincade, kincaid, kinkade, kinkead, kinoshita, kinst, kjenstad, knackstedt, knecht, knesset, knight, knighted, knighthood, knocked, knockout, knust, kumquat, kunst