Or search: fool, ware, shoot, split, dispel, volley, consume, deplete, disband, exhaust, fritter, scatter, disperse, squander
4 Syllables: SUUU
illustrating, imitating, integrating, irrigating, irritating, liberating, mitigating
5 Syllables: USUUU
anticipating, assimilating, debilitating, deliberating, discriminating, eliminating, exhilarating, facilitating, invigorating, obliterating, originating, participating, precipitating, reciprocating, reiterating

Found 22 words across 2 groupings.