RichThesaurus
nonoptional
nonoptional
synonyms
required
mandatory
compulsory
non-optional
unbewised
obligatory
unvoluntary
unoptional
imperative
binding
decretory
compulsatory
involuntary
unoptional
involuntary
forced
required
obligate
compulsory
obligatory
unbewised
requisite
imperative
nonoptional
definitions
adj
Not optional.