of the essence (adjective) prerequisite: necessary
Detalii: a perquisite is a profit or benefit in addition to a salary or wages or a gratuity or tip for services performed, while a prerequisite is something that is required in advance
Sinonime: abjure,
abstain,
avoid, balk, beg to be excused,
bypass, demur,
deny, desist, disapprove, dismiss, don't buy, forbear,
forgo, gainsay, nix, not accept, not hear of, not think of, pass on,
refrain, refuse,
reject,
renounce, reprobate, repudiate, send regrets, shy, spurn, turn down, turn thumbs down
Antonime: accept, say yes