Or search: ape, aper, cheat, mimic, mortal, parrot, epigon, cheater, slicker, someone, epigone, somebody, beguiler, deceiver, emulator
4 Syllables: SUUU
agitators
5 Syllables: USUUU
administrator

Found 2 words across 2 groupings. Skipped 1 excess word of a similar stem.