Synonyms of stringent

1 Syllable

set, hard, stiff, tough, strict, dour, harsh, rough

2 Syllables

drawing, steely, salter, poignant, binding, valid, picky, steelier, rigid, hang-tough, stricter, brick-wall, strictest, dourer, puncher, forced

3 Syllables

demanding, rigorous, backbreaker, austere, convincing, hard-nosed, precise, severe, forceful, ironclad, powerful, compelling, relentless, confining, draconian, exacting

4 Syllables

dyed-in-the-wool, peremptory, inflexible, iron-fisted, convictive, persuasive, acrimonious

5 Syllables

inalterable, unadaptable, unpermissive