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| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | required, necessary |
| Synonyms: | binding, commanding, compelling, compulsatory, compulsory, de rigueur, essential, forced, imperative, imperious, indispensable, involuntary, irremissible, needful, obligatory, requisite |
| Antonyms: | optional, unnecessary, voluntary |
| Main Entry: | binding |
| Part of Speech: | adjective |
| Definition: | necessary |
| Synonyms: | bounden, compulsory, conclusive, counted upon, essential, imperative, incumbent on, indissoluble, irrevocable, mandatory, obligatory, required, requisite, unalterable |
| Main Entry: | compulsory |
| Part of Speech: | adjective |
| Definition: | binding |
| Synonyms: | compulsatory, de rigueur, forced, imperative, imperious, mandatory, necessary, obligatory, required, requisite |
| Antonyms: | free, liberalized, liberated, optional, unstipulated, voluntary |
| Main Entry: | forced |
| Part of Speech: | adjective |
| Definition: | compulsory, strained |
| Synonyms: | affected, artificial, begrudging, binding, bound, coerced, coercive, compelled, conscripted, constrained, contrived, enforced, factitious, false, grudging, inflexible, insincere, involuntary, labored, mandatory, obligatory, peremptory, rigid, slave, stiff, stringent, unnatural, unwilling, wooden |
| Notes: | forcible indicates the use of brute force, forced means done involuntarily, and forceful suggests a potential for force |
| Antonyms: | noncompulsory, spontaneous, unforced, voluntary |
| Main Entry: | imperious |
| Part of Speech: | adjective |
| Definition: | bossy, overbearing |
| Synonyms: | arrogant, authoritative, autocratic, commanding, compulsatory, compulsory, despotic, dictatorial, domineering, exacting, haughty, high-handed, imperative, imperial, mandatory, obligatory, oppressive, overweening, peremptory, required, tyrannical, tyrannous |
| Notes: | imperial pertains to the qualities of power and royalty; imperious implies that someone is overbearing or domineering |
| Antonyms: | fawning, helpless, humble, obedient, servile, subservient, weak |
| Main Entry: | necessary |
| Part of Speech: | adjective |
| Definition: | essential |
| Synonyms: | all-important, basic, binding, bottom-line, cardinal, chief, compelling, compulsory, crucial, de rigueur, decisive, elementary, exigent, expedient, fundamental, imperative, incumbent on, indispensable, mandatory, momentous, name of game, needed, needful, obligatory, paramount, prerequisite, pressing, prime, principal, quintessential, required, requisite, significant, specified, unavoidable, urgent, vital, wanted |
| Antonyms: | inessential, unimportant, unnecessary, useless |
| Main Entry: | obligatory |
| Part of Speech: | adjective |
| Definition: | essential, required |
| Synonyms: | binding, coercive, compulsatory, compulsory, de rigueur, enforced, imperative, imperious, mandatory, necessary, requisite, unavoidable |
| Antonyms: | nonessential, optional, unrequired, voluntary |
| Main Entry: | prerequisite |
| Part of Speech: | adjective |
| Definition: | necessary |
| Synonyms: | called for, essential, expedient, imperative, important, indispensable, mandatory, necessitous, needful, obligatory, of the essence, required, requisite, vital |
| Notes: | a perquisite is a profit or benefit in addition to a salary or wages or a gratuity or tip for services performed, while a prerequisite is something that is required in advance |
| Antonyms: | optional, unnecessary, voluntary |
| Main Entry: | required/requisite |
| Part of Speech: | adjective |
| Definition: | necessary |
| Synonyms: | appropriate, called for, compulsatory, compulsory, condign, demanded, deserved, due, enforced, essential, imperative, imperious, indispensable, just, mandatory, needed, needful, obligatory, prerequisite, prescribed, recommended, right, rightful, set, suitable, unavoidable, vital |
| Antonyms: | nonessential, optional, unnecessary |
Roget's 21st Century Thesaurus, Third Edition
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 by the Philip Lief Group.
Cite This Source
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
