OPTIONAL as ADJECTIVE

1. Meaning
   • possible but not necessary
   • left to personal choice
   Antonym(s)
   • obligatory (what does obligatory mean?)
   Similar To
   • elective (what does elective mean?)
   • ex gratia (what does ex gratia mean?)
   • facultative (what does facultative mean?)
   • nonmandatory (what does nonmandatory mean?)
   • nonobligatory (what does nonobligatory mean?)