See definition of facultative on Dictionary.com

synonyms for facultative

On this page you'll find 12 synonyms, antonyms, and words related to facultative, such as: discretional, discretionary, elective, noncompulsory, nonobligatory, and not required.

How to use facultative in a sentence

  • Similarly the saphrophytes are classed as obligatory saphrophytes and facultative parasites.

  • If a parasite cannot exist outside animal tissues, it is an obligatory parasite; if it can, it is a facultative saphrophyte.

  • I have seen this particularly in those cases where facultative divergence also was greater than usual.

    Schweigger on Squint | C. Schweigger

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