Synonyms of biological

biological

adjective

ˌbī-ə-ˈlä-ji-kəl 

variants also biologic

as in birth

being such by blood and not by adoption or marriage

the rights of the biological father in this case

Synonyms & Similar Words

• birth
• natural
• legitimate
• consanguineous

Antonyms & Near Antonyms

• adopted
• adoptive
• nonbiological
• illegitimate

Example Sentences

Recent Examples of biological

Any advantage to daytime drinking probably comes down to your behaviors around drinking and sleep timing rather than a biological loophole in how the liver handles alcohol. — Lauren Panoff, Verywell Health, 17 July 2026

Future discoveries and therapies will come not from a human-like understanding of science, but by simple pattern recognition of new biological information at scale. — Reed Albergotti, semafor.com, 17 July 2026

If the human body has a limited energy budget, trade-offs will naturally arise when one biological process consumes more than its typical share. — Rachel Nuwer, Quanta Magazine, 17 July 2026

Then here comes this biological failure, congressional candidate Rod Joseph. — Sun Sentinel Editorial Board, Sun Sentinel, 17 July 2026