Or search: attacking, offensive
2 Syllables: SU
Aldrich, Charles's, College, faultless, Hollis, knowledge, olive, polish, solstice, tallest, Wallace, Wallis
3 Syllables: USU
abolish, acknowledge, demolish, unpolished
4 Syllables: UUSU
unacknowledged

Found 17 words across 3 groupings. Skipped 5 excess words of a similar stem.