prerequisite

noun 0.766

requirement

noun 0.756

prereq

noun 0.725

requisition

noun 0.663

perquisite

noun 0.651

necessity

noun 0.643

need

noun 0.636

necessitation

noun 0.635

desideratum

noun 0.622

mandatory

noun 0.619

functional requirement

noun 0.614

necessaire

noun 0.601

must-have

noun 0.600

quality requirement

noun 0.599

sine qua non

noun 0.598

precondition

noun 0.597

needing

noun 0.596

essential

noun 0.588

wajib

noun 0.567

qualification

noun 0.560

indispensable

noun 0.560

sufficient condition

noun 0.555

accouterment

noun 0.552

essent

noun 0.543

preferred

noun 0.542

obligatoriness

noun 0.542

condition precedent

noun 0.542

necessary room

noun 0.541

necessitarian

noun 0.539

sufficiency

noun 0.539

compulsory

noun 0.539

quire

noun 0.538

requite

noun 0.534

imperative

noun 0.534

ingredient

noun 0.534

dependency

noun 0.531

stipulation

noun 0.530

must

noun 0.530

indispensability

noun 0.529

adequacy

noun 0.528

behoof

noun 0.526

obbligato

noun 0.522

peremptory

noun 0.521

nonessential

noun 0.518

demand

noun 0.517

desirable

noun 0.516

precursor

noun 0.516

predicate

noun 0.513

postulate

noun 0.513

reagent

noun 0.512

obligation

noun 0.512

essential nutrient

noun 0.509

exigency

noun 0.508

acquirement

noun 0.508

criterion

noun 0.506

prescript

noun 0.506

presupposition

noun 0.505

proviso

noun 0.504

specification

noun 0.503

apposite

noun 0.502

adequateness

noun 0.502