Compulsory

Adjective

 * 1) Required; obligatory; mandatory
 * 2) Having the power of compulsion; constraining

Noun

 * 1) Something that is compulsory or required.

Adverbs for Compulsory
disagreeably; hatefully; substantially; significantly; dangerously; disturbingly; implicitly; strictly; rigidly; hideously; flagrantly; wisely; sensibly; cruelly; detestably; odiously; wickedly; irksomely; arbitrarily; officially; locally; inescapably; fortunately; annoyingly; tediously; prosily; vexatiously; needlessly; ineffectively; irresistibly; silently; subtly; sadly; inexorably; stringently; peremptorily; terrifyingly; actually; authoritatively; absolutely; domi-nantly; imperiously; originally; sternly; necessarily.

Antonyms for Compulsory

 * optional

Thesaurus
binding, choiceless, coactive, compelling, compulsatory, compulsive, conclusive, constraining, decisive, decretory, dictated, driving, entailed, exigent, final, hard-and-fast, imperative, imperious, importunate, imposed, inevitable, involuntary, irresistible, irrevocable, mandated, mandatory, must, necessary, necessitous, obligatory, peremptory, prescript, prescriptive, pressing, required, restraining, ultimate, urgent, without appeal, without choice