Synonyms of strictest

1 Syllable

set, hard, firm, tough, straight, stern, dour, harsh, grim

2 Syllables

prudish, stickling, stuffy, picky, square, rigid, stringent, uptight

3 Syllables

forbidding, rigorous, strait-laced, austere, unsparing, punctilious, severe, scrupulous, hard-boiled, draconian, exacting

4 Syllables

oppressive, no-nonsense, iron-fisted

5 Syllables

puritanical, disciplinary, unpermissive