obligational

adj 0.891

obligatory

adj 0.867

obligated

adj 0.864

obliged

adj 0.718

mandatory

adj 0.708

compulsory

adj 0.692

nonobligatory

adj 0.685

required

adj 0.655

facultative

adj 0.646

mandated

adj 0.645

wajib

adj 0.643

obliging

adj 0.629

necessary

adj 0.622

imperative

adj 0.619

essential

adj 0.614

mandative

adj 0.612

necessitous

adj 0.607

necessitarian

adj 0.605

requisite

adj 0.601

constrained

adj 0.599

indispensable

adj 0.597

unavoidable

adj 0.593

forced

adj 0.592

ineluctable

adj 0.577

nonelective

adj 0.567

forcing

adj 0.566

peremptory

adj 0.562

exigent

adj 0.561

strict

adj 0.559

unconditional

adj 0.559

inescapable

adj 0.557

liable

adj 0.554

nonnegotiable

adj 0.551

legally binding

adj 0.550

inevitable

adj 0.550

optional

adj 0.549

stipulate

adj 0.549

dependent

adj 0.548

imposable

adj 0.547

onerous

adj 0.545

uncompromising

adj 0.544

compulsive

adj 0.544

prerequisite

adj 0.543

adherent

adj 0.542

oblate

adj 0.540

absolutist

adj 0.540

exigible

adj 0.539

stringent

adj 0.538

must-have

adj 0.538

forcible

adj 0.537

obedient

adj 0.535

fastidious

adj 0.535

conditional

adj 0.534

obsessional

adj 0.533

determinate

adj 0.533

unconditioned

adj 0.533

de rigueur

adj 0.531

rulebound

adj 0.528

obsessive

adj 0.528

of the essence

adj 0.528

coercive

adj 0.527

nonessential

adj 0.526

absolute

adj 0.525

preemptory

adj 0.525

unalienable

adj 0.523

obeisant

adj 0.522

certain

adj 0.521

bound

adj 0.519

inalienable

adj 0.518

essentialist

adj 0.518

needful

adj 0.518

nondependent

adj 0.517

hard-and-fast

adj 0.517

restrictive

adj 0.517

binding

adj 0.516

unfree

adj 0.516

guaranteed

adj 0.516

involuntary

adj 0.516

rigid

adj 0.516

omissible

adj 0.516

nonignorable

adj 0.515

nonsubstitutable

adj 0.515

demanding

adj 0.515

definite

adj 0.514

non-strict

adj 0.513

compelling

adj 0.513

insistent

adj 0.513

indentured

adj 0.512

rogatory

adj 0.512

unrequired

adj 0.511

restricted

adj 0.511

owing

adj 0.511

supererogatory

adj 0.510

prohibitory

adj 0.509

enforceable

adj 0.509

nonabsolute

adj 0.509

obdurate

adj 0.509

dedicated

adj 0.507

critical

adj 0.506

hard-set

adj 0.506