n.
Function: adjective
1
Synonyms: ESSENTIAL 4, imperative, indispensable, necessitous, prerequisite
Related Words: compelling, compulsory, constraining, mandatory, obligatory; important, momentous, significant; cardinal, fundamental
Contrasted Words: insignificant, unessential, unimportant
Antonyms: unnecessary
2
Synonyms: INEVITABLE , certain, ineluctable, ineludible, inescapable, inevasible, returnless, unavoidable, unescapable, unevadable
Related Words: inerrable, inerrant, infallible, unerring