Or search: untangle, disengage, disentangle, disencumber
4 Syllables: SUUU
advocating, allocating, complicating, deprecating, educating, excavating, indicating, lubricating, meditating, speculating, suffocating, vindicating
5 Syllables: USUUU
communicating, eradicating, reciprocating

Found 15 words across 2 groupings.