| 释义 |
optional
op·tion·al O0102600 (ŏp′shə-nəl)adj. Left to choice; not compulsory or automatic.
op′tion·al·ly adv.optional (ˈɒpʃənəl) adjpossible but not compulsory; left to personal choice ˈoptionally advop•tion•al (ˈɒp ʃə nl)
adj. left to one's choice; not required or mandatory: Formal dress is optional. [1755–65] op′tion•al•ly, adv. Thesaurus| Adj. | 1. | optional - possible but not necessary; left to personal choiceobligatory - morally or legally constraining or binding; "attendance is obligatory"; "an obligatory contribution" |
optionaladjective voluntary, open, discretionary, possible, extra, elective, up to the individual, noncompulsory Some people feel sex education should remain an optional school subject.
required, compulsory, mandatory, obligatory, de rigueur (French)optionaladjectiveNot compulsory or automatic:discretionary, elective, facultative.Translationsoption (ˈopʃən) noun choice. You have no option but to obey him. 選擇權 选择，选择权 ˈoptional adjective a matter of choice. Music is optional at our school; an optional subject. 可任意選擇的 可任意选择的
EncyclopediaSeeOptionalityLegalSeeOptionFinancialSeeoptionAcronymsSeeoptionoptional
Synonyms for optionaladj voluntarySynonyms- voluntary
- open
- discretionary
- possible
- extra
- elective
- up to the individual
- noncompulsory
Antonyms- required
- compulsory
- mandatory
- obligatory
- de rigueur
Synonyms for optionaladj not compulsory or automaticSynonyms- discretionary
- elective
- facultative
Antonyms for optionaladj possible but not necessaryAntonyms |