required

1 forcing one's compliance or participation by or as if by law formal instruction in driving is required in this state before you can get your driver's license Synonyms compulsory, forced, imperative, incumbent, involuntary, necessary, nonelective, obligatory, peremptory, mandatoryRelated Words all-important, essential, indispensable, needed, requisite; insistent, persistent, pressing, urgent; demanded, enforced; coerciveNear Antonyms chosen, discretionary; dispensable, unnecessary, unneeded, unwanted; inconsequential, insignificant, nonessential, unimportantAntonyms elective, optional, voluntary

2 impossible to do without with these frigid winds, hats, scarves, and good mittens are required equipment for heading outside Synonyms all-important, critical, imperative, indispensable, integral, must-have, necessary, necessitous, needed, needful, essential, requisite, vitalRelated Words prerequisite; compulsory, mandatory, nonelective, obligatory; consequential, crucial, important, major, material, meaningful, momentous, significant, substantial, weighty; basic, central, fundamental, key, organic; insistent, persistent, pressing, urgentNear Antonyms undesired, unwanted; inconsequential, insignificant, unimportant; excess, external, extra, extraneous, superfluous, surplusAntonyms dispensable, inessential, needless, nonessential, unessential, unnecessary, unneeded