Synonyms of peremptory

1 Syllable

firm, curt

2 Syllables

bossy, certain, pricey, binding, ruder, curter, rudest, sniffy, final, delphian, stringent, fixed, pricier, forced

3 Syllables

out-of-line, cold-shoulder, insistent, insolent, biggety, rigorous, decided, overkill, prideful, imperial, wrong-headed, commanding, crack-the-whip, high-handed, imperious, severe, severest, severer, dogmatic, compelling, finished, highhanded, arrogant

4 Syllables

autocratic, tyrannical, absolute, domineering, assertive, decisive, perseverant, dictative, undeniable, iron-handed, high-and-mighty, overbearing, oracular, dictatorial, intolerant, magisterial, obstinate, positive, arbitrary, unreasoned

5 Syllables

uncompromising, categorical, obligatory, irrefutable, imperative

6 Syllables

incontrovertible