Or search: acquit, uphold, assoil, warrant, discharge, exculpate, exonerate, legitimate
4 Syllables: SUUU
advocating, allocating, complicating, deprecating, educating, extricating, imitating, inculcating, indicating, insulating, integrating, intimating, lubricating, simulating, stimulating, suffocating
5 Syllables: USUUU
communicating, disintegrating, eradicating, reciprocating

Found 20 words across 2 groupings.