făk'əl-tā'tĭv
The definition of optional is available, but not required.
Available for use as needed or desired:
Having the power to choose
aerobe (related)
obligate (related)
Absolutely indispensable; essential.
anaerobe (related)
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non-pathogenic (related)
Find another word for facultative. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for facultative, like: optional, discretionary, elective, choice, aerobe, obligate, anaerobe and null.
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