Where does “parent-to-be” come from?

parent-to-be (English) comes from English parent, from Middle French parent, from Old French parent, from Latin parēns, from Latin pariō, from Latin -iō, from Proto-West Germanic -jō, from Proto-Indo-European -yéti — he, she.

parent-to-be (English): A pregnant person, especially one expecting their first child

Definitions

  1. A pregnant person, especially one expecting their first child

Ancestry of “parent-to-be”, step by step

parent-to-be traces back through two separate lines of ancestry.

via English parent

StepLanguageWordMeaning
1EnglishparentOne of the two persons from whom one is...
2Middle Frenchparentparent
3Old Frenchparentparent
4Latinparēnsparent, mother, father
5Latinpariōto bear, to give birth to
6Latin-iō
7Proto-West Germanic-jōForms agent nouns from verbs
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English to-be

StepLanguageWordMeaning
1Englishto-beThe future, that which is to come
2EnglishtoA particle used for marking the following verb as...
3Middle Englishtotoe; to; too
4Middle Englishtonethe one
5LatintonusThe stretching or straining of a rope; A strain;...
6Ancient Greekτόνοςrope, cord; chord; tone, note
7Proto-Hellenictónosrope, cord; tension
8Proto-Indo-Europeantónossomething stretched; chord, fiber, string
9Proto-Indo-Europeanten-to stretch, to extend
Every word from Chichewa iyeEvery word from Proto-Indo-European -yétiEvery word from Latin -iō