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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(271) Unlike chemical antiseptics, essential oils are harmless to tissue, yet they are powerful aggressors towards germs.
(272) It is essential that relatives have adequate warning so that they can make arrangements for the patient's homecoming.
(273) But it is absolutely essential that these reforms are directed from within, according to the wishes of the Association's own members.
(274) It is essential that sections 0404 and 0405 of this manual on Investment Advertisements is read and understood before placing any advertisements.
(275) Professional advice on the transcription of reading schemes and work schemes is essential.
(276) Essential to life, is desiring the things that you need, than needing the things you desire. Anthony Liccione 
(277) By analysing simple situations, with essential features in common, we can gain insight into the behaviour of these complicated beams.
(278) Despite this rather alarming fact, essential oils are harmless to skin if used correctly as advocated in this book.
(279) In this position it is absolutely essential that the receptionist remains cool,(www.Sentencedict.com) calm and in control of the situation.
(280) The address book stores all the essential name and address details and provides room for telephone numbers and a general comment.
(281) Homoeopathy is the exception and is recommended as an alternative therapy should treatment with essential oils and herbs be only partially effective.
(282) All that Anselm demanded was that the essential basis for carrying out his duties as archbishop should remain inviolate.
(283) Digging might not be classed as essential training, but he'd been sent on attachment to learn all about real soldiering.
(284) For many young academics they provide the first step in the ladder of publications, now an essential requisite for career advancement.
(285) These topics are important, but instrumental analytical chemistry plays an essential role in analysis these days and needs better coverage.
(286) We see therefore that the Framers were acutely conscious that the bicameral requirement and the Presentment Clauses would serve essential constitutional functions.
(287) The essential concepts and processes of marketing apply as much to marketing in the international arena as the domestic one.
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.