Essential, basic, certainty, call, basic, and essential requirement are all synonyms for necessity. Luxury and optional are antonyms of necessity. And here are 39 another word for necessity.
Basic, desideratum, essential requirement, essential, fundamental, indispensability, indispensable thing/item, necessary, need, prerequisite, requisite, sine qua non, and needfulness are all synonyms for necessity.
Certainty, inescapability, inevitability, inexorability, unavoidability, and ineluctability are all another word for necessity.
Call, crisis, emergency, exigency, force/pressure of circumstance, need, obligation, urgency, and force majeure are all synonyms for necessity.
Basic, essential requirement, essential, fundamental, indispensable thing/item, necessary, prerequisite, requisite, sine qua non, and desideratum are all another word for necessity.
Necessity synonym page has a variety of synonyms that differ in length. 3 synonyms with 4, 10, and 11 letters and 2 synonyms with 5, 12, 13, 14, 20, and 22 letters. 1 synonym with 6, 7, 8, 16, and 27 letters and 8 synonyms with 9 letters. For a total of 34 another word for necessity.
Water is a necessity for survival.
Education is a necessity for success.
In emergencies, communication becomes a necessity.
Food and shelter are basic necessities.