Essential
WordNet
adjective
(1) Defining rights and duties as opposed to giving the rules by which rights and duties are established
"Substantive law"
(2) Basic and fundamental
"The essential feature"
(3) Absolutely required and not to be used up or sacrificed
(4) Of the greatest importance
"The all-important subject of disarmament"
"Crucial information"
"In chess cool nerves are of the essence"
(5) Absolutely necessary; vitally necessary
"Essential tools and materials"
"Funds essential to the completion of the project"
"An indispensable worker"
(6) Being or relating to or containing the essence of a plant etc
"Essential oil"
noun
(7) Anything indispensable
"Food and shelter are necessities of life"
"The essentials of the good life"
"Allow farmers to buy their requirements under favorable conditions"
"A place where the requisites of water fuel and fodder can be obtained"
WiktionaryText
Adjective
- Necessary.
- Very important; of high importance.
- Being in the basic form; showing its essence.
- Don’t mind him being grumpy. That’s the essential Fred.
- Such that each complementary region is irreducible, the boundary of each complementary region is incompressible by disks and monogons in the complementary region, and no leaf is a sphere or a torus bounding a solid torus in the manifold.
Antonyms
- inessential, unessential, accidental, nonessential, unneeded, adscititious, unimportant, accessorial, unnecessary, incidental