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Optional

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( Xem từ này trên từ điển Anh Việt)

Mục lục

Adjective

left to one's choice; not required or mandatory
Formal dress is optional.
leaving something to choice.

Antonyms

adjective
compulsory , forced , required , coercive , obligatory

Synonyms

adjective
alternative , arbitrary , discretional , discretionary , elective , extra , facultative , free , noncompulsory , nonobligatory , no strings attached , not required , open , unforced , unrestricted , up to the individual , volitional , voluntary , available , contingent , discriminative , preferential

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