Biological mother
Mum and biological mother are semantically related. In some cases you can use "Mum" instead a noun phrase "Biological mother".
Mum
Mum noun - Informal terms for a mother.
Biological mother and mum are semantically related. You can use "Biological mother" instead a noun "Mum".
Both terms in one sentence
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Leanne from the Furry Comic Rasvaar has two mothers: one her biological mother, and the other her 'mad' (a portmanteau of mum and dad).
Source: Has Two Mommies
Cite this Source
Mum and Biological mother. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/biological_mother/mum
Biological mother & Mum. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/biological_mother/mum>.
Mum or Biological mother. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/biological_mother/mum.
Google Ngram Viewer shows how "biological mother" and "mum" have occurred on timeline