Where does “mommie” come from?

mommie (English) comes from English mom, from English momma, from English mama, from Xhosa umama, from Proto-Bantu *mààmá.

Ancestry of “mommie”, step by step

mommie traces back through two separate lines of ancestry.

via English mom

StepLanguageWordMeaning
1Englishmommother; An adult female owner of a pet; To care...
2Englishmommamother; A voluptuous woman; One's wife or...
3EnglishmamaMother, female parent
4Xhosaumamamom, mother
5Proto-Bantu*mààmá

via English ie

StepLanguageWordMeaning
1EnglishieAlternative form of i.e
Every word from Proto-Bantu *mààmáEvery word from Xhosa umamaEvery word from English mama