Synonyms of strict

1 Syllable
set, hard, firm, straight, just, dour, harsh, tough, stern, grim
2 Syllables
correct, steely, bullseye, juster, prudish, bossy, starchier, punctual, square, hang-tough, condign, stickling, stuffy, picky, sterner, stringent, bossier, hardshell, hard-line, sited, formal, steelier, justing, starchy, rigid, ruber, sternest, uptight
3 Syllables
demanding, rigorous, veracious, scrupulous, ascetic, relentless, forbidding, tyrannic, backbreaker, austere, watertight, precise, severest, severer, draconian, strait-laced, puritan, unsparing, severe, hard-boiled, literal, hard-shelled, unbending, exacting, ruffianly, finicking, punctilious, abstinent, straitlaced, straightlaced
4 Syllables
formalistic, iron-fisted, undeviating, regimented, oppressive, meticulous, uncolored, veridical, undistorted, conscionable, iron-handed, unrefuted, accurate, no-nonsense, inflexible
5 Syllables
undeceptive, unadaptable, disciplinary, unpermissive, overconscientious, ultraprecise, isolationist, puritanical, authoritarian, uncompromising, inalterable, selfdisciplined, self-disciplined
6 Syllables
ceremonialistic, unexaggerated
7 Syllables
nondiscriminatory