All incumbent on synonyms

adj incumbent on

• necessary — being essential, indispensable, or requisite: a necessary part of the motor.
• required — to have need of; need: He requires medical care.
• mandatory — authoritatively ordered; obligatory; compulsory: It is mandatory that all students take two years of math.
• irrevocable — not to be revoked or recalled; unable to be repealed or annulled; unalterable: an irrevocable decree.
• conclusive — Conclusive evidence shows that something is certainly true.
• conscientious — Someone who is conscientious is very careful to do their work properly.
• unavoidable — unable to be avoided; inevitable: an unavoidable delay.
• fundamental — serving as, or being an essential part of, a foundation or basis; basic; underlying: fundamental principles; the fundamental structure.
• urgent — compelling or requiring immediate action or attention; imperative; pressing: an urgent matter.
• indispensable — absolutely necessary, essential, or requisite: an indispensable member of the staff.
• crucial — If you describe something as crucial, you mean it is extremely important.
• needed — necessary, required, or wanted (usually used in combination): a much-needed vacation.
• vital — of or relating to life: vital processes.
• significant — important; of consequence.
• basic — You use basic to describe things, activities, and principles that are very important or necessary, and on which others depend.
• paramount — chief in importance or impact; supreme; preeminent: a point of paramount significance.
• decisive — If a fact, action, or event is decisive, it makes it certain that there will be a particular result.
• requisite — required or necessary for a particular purpose, position, etc.; indispensable: the requisite skills of an engineer.
• imperative — imperative language
• prime — of the first importance; demanding the fullest consideration: a prime requisite.
• chief — The chief of an organization is the person who is in charge of it.
• pressing — urgent; demanding immediate attention: a pressing need.
• cardinal — A cardinal is a high-ranking priest in the Catholic church.
• prerequisite — required beforehand: a prerequisite fund of knowledge.
• principal — first or highest in rank, importance, value, etc.; chief; foremost.
• compulsory — If something is compulsory, you must do it or accept it, because it is the law or because someone in a position of authority says you must.
• indissoluble — not dissoluble; incapable of being dissolved, decomposed, undone, or destroyed.
• obligatory — required as a matter of obligation; mandatory: A reply is desirable but not obligatory.
• unalterable — not capable of being altered, changed, or modified.
• bounden — morally obligatory (archaic except in the phrase bounden duty)
• binding — A binding promise, agreement, or decision must be obeyed or carried out.
• compliant — If you say that someone is compliant, you mean they willingly do what they are asked to do.
• deferential — Someone who is deferential is polite and respectful towards someone else.
• devoted — Someone who is devoted to a person loves that person very much.
• docile — easily managed or handled; tractable: a docile horse.
• faithful — strict or thorough in the performance of duty: a faithful worker.
• punctilious — extremely attentive to punctilios; strict or exact in the observance of the formalities or amenities of conduct or actions.
• regardful — observant; attentive; heedful (often followed by of): a man regardful of the feelings of others.
• respectful — full of, characterized by, or showing politeness or deference: a respectful reply.
• submissive — inclined or ready to submit or yield to the authority of another; unresistingly or humbly obedient: submissive servants.
• duteous — dutiful; obedient.
• reverential — of the nature of or characterized by reverence; reverent: reverential awe.
• compelling — A compelling argument or reason is one that convinces you that something is true or that something should be done.
• de rigueur — If you say that a possession or habit is de rigueur, you mean that it is fashionable and therefore necessary for anyone who wants to avoid being considered unfashionable.
• momentous — of great or far-reaching importance or consequence: a momentous day.
• quintessential — of the pure and essential essence of something: the quintessential Jewish delicatessen.
• specified — to mention or name specifically or definitely; state in detail: He did not specify the amount needed.
• wanted — to feel a need or a desire for; wish for: to want one's dinner; always wanting something new.
• needful — necessary or required: needful supplies.
• all-important — crucial; vital