Synonym: basic, fundamental, important, necessary, needed, required, vital. Similar words: essentially, essentiality, potential, potentially, tangential, residential, influential, presidential. Meaning: [ɪ'senʃl] 
n. anything indispensable. adj. 1. absolutely necessary; vitally necessary 2. basic and fundamental 3. of the greatest importance 4. being or relating to or containing the essence of a plant etc 5. defining rights and duties as opposed to giving the rules by which rights and duties are established 6. absolutely required and not to be used up or sacrificed.
n. anything indispensable. adj. 1. absolutely necessary; vitally necessary 2. basic and fundamental 3. of the greatest importance 4. being or relating to or containing the essence of a plant etc 5. defining rights and duties as opposed to giving the rules by which rights and duties are established 6. absolutely required and not to be used up or sacrificed. 
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(61) Some accommodation between conservation and tourism is essential.
(62) Essential oils have powerful antiseptic properties.
(63) Building strong relationships is essential.
(64) Enzymes are essential to the body's functioning.
(65) Training in interpersonal skills is essential.
(66) Tolerance is an essential ingredient for a happy marriage.
(67) Water is essential for/to living things.
(68) Her most essential quality is kindness.
(69) National unity is essential in wartime.
(70) Vitamins are essential for healthy growth.
(71) Do you consider these textbooks essential for the course?
(72) Elections are essential for the sustenance of parliamentary democracy.
(73) Although useful, the accessories are by no means essential.
(74) His essential decency makes it impossible to dislike him.
(75) Is aggression an essential part of the human psyche?
(76) A ceasefire is an essential precondition for negotiation.
(77) REM sleep is an essential part of brain function.
(78) Punctuality is essential in the business world.
(79) Limit your expenditure to what is essential.
(80) Breathable, waterproof clothing is essential for most outdoor sports.
(81) Cooperative activity is essential to effective community work.
(82) It is essential to get good professional advice .
(83) It is essential that you should come home early.
(84) There are essential differences between the two.
(85) Attention to detail is essential in this job.
(86) Computers are an essential part of modern life .
(87) Such measures are desirable if not essential.
(88) Yeast is essential for the fermentation that produces alcohol.
(89) Window locks are fairly cheap and absolutely essential .
(90) Cereals supply essential protein and vitamins.
More similar words: essentially, essentiality, potential, potentially, tangential, residential, influential, presidential, essence, sentiment, substantial, substantially, assessment, differentiate, passenger, assess, vessel, initial, partial, dessert, finesse, partially, palatial, initially, depressed, senseless, absent, present, consent, sentence.