stringent

adj 0.757

rigid

adj 0.725

strict

adj 0.718

strenuous

adj 0.713

vigorous

adj 0.700

exacting

adj 0.696

arduous

adj 0.671

scrupulous

adj 0.666

meticulous

adj 0.657

gruelling

adj 0.640

harsh

adj 0.627

diligent

adj 0.621

rugged

adj 0.621

hard-nosed

adj 0.620

hard

adj 0.615

hard-and-fast

adj 0.615

thorough

adj 0.614

austere

adj 0.613

sedulous

adj 0.612

disciplined

adj 0.610

tough

adj 0.609

ruthless

adj 0.606

regimented

adj 0.602

draconian

adj 0.602

painstaking

adj 0.598

fierce

adj 0.598

punctilious

adj 0.598

ferocious

adj 0.597

demanding

adj 0.597

serious

adj 0.593

hardline

adj 0.591

brutal

adj 0.588

hard-set

adj 0.587

severe

adj 0.587

strictly proper

adj 0.585

strait-laced

adj 0.585

precise

adj 0.584

intense

adj 0.582

disciplinarian

adj 0.582

laborious

adj 0.582

methodical

adj 0.581

robust

adj 0.581

stiff

adj 0.581

assiduous

adj 0.577

overscrupulous

adj 0.576

resolute

adj 0.576

systematic

adj 0.575

thoroughgoing

adj 0.574

staunch

adj 0.574

zealous

adj 0.572

legalistic

adj 0.568

scientific

adj 0.566

unyielding

adj 0.563

relentless

adj 0.563

rock-ribbed

adj 0.562

punitive

adj 0.561

difficult

adj 0.561

hard-charging

adj 0.560

conscientious

adj 0.559

hardball

adj 0.559

serious-minded

adj 0.558

tight

adj 0.558

challenging

adj 0.557

sturdy

adj 0.557

unrelenting

adj 0.556

tenacious

adj 0.554

studious

adj 0.554

rock hard

adj 0.554

fastidious

adj 0.554

punishing

adj 0.554

adamant

adj 0.553

unsparing

adj 0.553

vehement

adj 0.553

hard put

adj 0.552

veracious

adj 0.551

extreme

adj 0.548

rubric

adj 0.548

inflexible

adj 0.548

drastic

adj 0.546

precision

adj 0.546

restrictive

adj 0.546

torturous

adj 0.545

rough

adj 0.543

dour

adj 0.543

determined

adj 0.543

intensive

adj 0.542

heavy

adj 0.541

iron-hearted

adj 0.541

merciless

adj 0.541

fanatical

adj 0.540

ritualistic

adj 0.540

non-strict

adj 0.539

taut

adj 0.539

uncompromising

adj 0.539

radical

adj 0.538

vicious

adj 0.537

earnest

adj 0.537

structured

adj 0.537

aggressive

adj 0.536

judicious

adj 0.536