Or search: bust, needy, skint, plural, jejune, slummy, hapless, pinched, pitiful, piteous, homeless, pathetic, pitiable, wretched, beggarly
2 Syllables: SU
bluish, brutish, cubic, foolish, Hewitt, Jewish, Lewes, Lewis, Louis, Munich, music, rubric, truest, tulip, tunic, Tunis, unit
3 Syllables: USU
acoustic, communis
4 Syllables: UUSU
therapeutic
5 Syllables: UUUSU
individualist

Found 21 words across 4 groupings. Skipped 5 excess words of a similar stem.