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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(121) Jordan promised to trim the city budget without cutting essential services.
(122) During the emergency, people stocked up on essential items like candles, medicines and tins of food.
(123) The book contains a quick reference guide to essential grammar at the back.
(124) Product differentiation is essential to the future of the company.
(125) It's the basil that gives the sauce its essential character.
(126) It is essential that our pilots are given the best possible training.
(127) Fresh fruit and vegetables form an essential/important part of a healthy diet.
(128) I keep essential items in my hand luggage when I fly.
(129) Most authorities agree that play is an essential part of a child's development.
(130) Abstention from alcohol is essential while you are taking this medication.
(131) When launching a kick it is essential to be at the correct distance from your opponent.
(132) An affordable nursery education service is an essential basic amenity.
(133) Eggs contain all eight essential amino acids which we depend on for good health.
(134) Engineers are carrying out essential maintenance work on the main line to Cambridge.
(135) The idea was to modernize various aspects of the house without changing its essential character.
(136) I do not want drugs in this school. It's essential that we nip the problem in the bud so I want a meeting with all the parents next week.
(137) Computer literacy is becoming as essential as the ability to drive a car.
(138) The essential difference between Sam and me was the fact that I took life seriously.
(139) A rich and varied cultural life is essential for this couple.
(140) It is essential that the safety procedures are strictly adhered to.
(141) Besides ability, the other essential element in political success is luck.
(142) It is essential for us to try to decide whether television is a blessing or a curse.
(143) Elbow pads and knee pads are essential on a skateboard.
(144) Can it be moral to make so much money out of a commodity which is essential to life?
(145) It's a very high office building with all essential modern facilities.
(146) It is essential that he should have a fair trial.
(147) A basic sense of rhythm and pitch is essential in a music teacher.
(148) It's essential you make the right decisions from the word go.
(149) It is essential that all working components are properly lubricated.
(150) What is the essential difference between these two economic systems?
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.