US /ˈɑpʃəˌnɛri/ UK /ˈɒpʃənəri/
adj noun

Meanings

  1. 1
    adj

    of or relating to options; left to one's choice

    The extra coverage was treated as optionary rather than required.

Thesaurus

Synonyms
1 adj · of or relating to options;... optionaldiscretionaryelectivevoluntary
Word family
Related forms optionoptionalopt

Etymology

From 'option' (Latin 'optio', 'choice', from 'optare', 'to choose, wish') plus '-ary', a rare formation meaning 'pertaining to choice'.

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