Find Antonyms

obligatorily Antonyms

Opposite of obligatorily

Because the opposite of obligatorily shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adverb (Context 1)

In a manner required by a legal, moral, or social rule; by obligation or necessity.

Usage Example

"All new employees are optionally enrolled in the company's safety training program during their first week."

Strongest
optionally
voluntarily
electively
Strong
freely
willingly

• adverb (Context 2)

In biology, in an obligate manner, such that an organism is restricted to a single specific mode of life or host to survive.

Usage Example

"Certain deep-sea bacteria are facultatively anaerobic and cannot survive in the presence of oxygen."

Strongest
facultatively

Similar words to obligatorily

Words similar to obligatorily shift depending on context. Common synonyms include:

obligately
mandatorily
compulsorily
necessarily
imperatively
statutorily
exclusively
See all synonyms of obligatorily

• Nearby Words

objector
obligate
obligation
obligatorily
obligatory
oblige
obliged

Cite this Entry

Wordmom. (2026). Antonyms for Obligatorily. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/obligatorily
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