Or search: befool, betray, blackcap, chump, cob, cod, cozen, deceive, delude, dupe, fool, kid, kittiwake, larid, mew
1 Syllable: S
bulb, bulge, bulk, cul, cull, cult, curl, dull, earl, earle, earls, girl, gulf, gulls, gulp, hulk, hull, hurl, lull, mull, null, pearl, pulp, pulse, skull, sul, swirl, whirl, will, world
2 Syllables: SU
adult, impulse, insult
2 Syllables: US
biol, consult, convulsed, divulge, engulf, exult, indulge, occult, repulse, result, unfurled
3 Syllables: UUS
agreeable, foreseeable
4 Syllables: UUUS
disagreeable

Found 47 words across 5 groupings. Skipped 29 excess words of a similar stem.