Peremptory

Adjective

 * 1)  Precluding debate or expostulation; not admitting of question or appeal; positive; absolute; decisive; conclusive; final.
 * 2) Positive in opinion or judgment; absolutely certain, overconfident, unwilling to hear any debate or argument (especially in a pejorative sense); dogmatic.
 * 3)  Firmly determined, resolute; obstinate, stubborn.
 * 4) Accepting no refusal or disagreement; imperious, dictatorial.

Adverbs for Peremptory
disagreeably; proudly; dictatorially; extremely; unnecessarily; arrogantly; emphatically; bumptiously; incisively; cuttlngly; unwarrantedly; officially; formally; coldly; sharply; sternly; severely; trenchantly; unfortunately; offensively; unwisely; deliberately; habitually; unconsciously.

Thesaurus
absolute, absolutist, absolutistic, admitting no exception, all-out, arbitrary, aristocratic, arrogant, authoritarian, authoritative, autocratic, bigoted, binding, bossy, categorical, certain, clear, commanding, compelling, complete, compulsory, conceited, conclusive, de rigueur, decided, decisive, decretal, decretive, decretory, definite, definitive, despotic, determinate, dictated, dictating, dictatorial, directive, doctrinaire, doctrinarian, dogmatic, dogmatizing, domineering, downright, emphatic, entailed, entire, explicit, express, feudal, final, firm, fixed, flat, flat-out, global, grinding, hard-and-fast, high-handed, imperative, imperial, imperious, implicit, imposed, inappealable, incontrovertible, indisputable, insistent, instructive, irrefutable, irrevocable, jussive, lordly, magisterial, magistral, mandated, mandating, mandatory, masterful, monocratic, must, necessary, obligating, obligatory, obstinate, opinionated, opinionative, opinioned, oppressive, oracular, out-and-out, outright, overbearing, overruling, perfect, pontifical, positive, positivistic, preceptive, preclusive, prescript, prescriptive, pronunciative, repressive, required, round, self-opinionated, self-opinioned, severe, straight, straight-out, strict, suppressive, total, tyrannical, tyrannous, ultimate, uncircumscribed, uncompromising, unconditional, unconditioned, undoubting, unequivocal, unhampered, unhesitating, unlimited, unmistakable, unmitigated, unqualified, unquestioning, unreserved, unrestricted, unwaivable, utter, whole, without appeal, without exception, without reserve