Thesaurus:optional

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Synonyms

• discretionary
• elective
• facultative
• free
• noncompulsory
• nonmandatory
• nonobligate
• nonobligatory
• nonrequired
• nonrequisite
• optional
• optionary
• unrequired
• volitional
• voluntary

Antonyms

• compulsory
• mandatory
• obligate
• obligatory
• required
• requisite

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