Facultative and Obligate

Opposite meaning words

Facultative adjective - Able to exist under more than one set of conditions.

Usage example: a facultative parasite can exist as a parasite or a saprophyte

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Obligate is an antonym for facultative.

Nearby Word: facultatively

Obligate adjective - Restricted to a particular condition of life.

Usage example: an obligate anaerobe can survive only in the absence of oxygen

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Facultative is an antonym for obligate.

Cite this Source

Obligate and Facultative. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/facultative/obligate

Facultative & Obligate. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/facultative/obligate>.

Obligate or Facultative. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/facultative/obligate.

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