Shortest rhymes with:
chartist, absolutist, adventist, chartist, clarinetist, corporatist, cutest, defeatist, dramatist, egotist, elitist, flutist, hypnotist, jeanbaptiste, leftist, neuroscientist, pragmatist, rightist, scientist, separatist, statist, unnoticed, whitest
Shortest sounds like:
scratched, securitized, shortcut, shortsighted, shrewdest