Or search: ma, mama, mamma, mammy, mom, momma, mommy, secrecy
1 Syllable: S
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: UUS
4 Syllables: UUSU

Found 160 words across 6 groupings. Skipped 50 excess words of a similar stem.