Or search: brit, britisher, celt, kelt, patrial
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: USU
4 Syllables: UUSU
5 Syllables: UUUSU

Found 274 words across 6 groupings. Skipped 111 excess words of a similar stem.