First and Firstborn

First

First adjective - Preceding all others in time or space or degree.
Usage example: her first baby

Firstborn and first are semantically related In some cases you can use "Firstborn" instead an adjective "First".

Nearby Word: firstly

Firstborn

Firstborn adjective - First in order of birth.
Usage example: the firstborn child
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Synonyms for Firstborn

First and firstborn are semantically related in most senior topic. You can use "First" instead an adjective "Firstborn".
Cite this Source
Firstborn and First. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/first/firstborn
First & Firstborn. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/first/firstborn>.
Firstborn or First. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/first/firstborn.
Google Ngram Viewer shows how "first" and "firstborn" have occurred on timeline