peremptory

Subject to no further debate or dispute; final and unassailable.

Not allowing contradiction or refusal; imperative.

Offensively self-assured; imperious or dictatorial.

Unquestionably; positively.

That precludes or does not admit of debate, question, or expostulation; hence, express; authoritative; positive; absolute: as, a, peremptory command or call.

In law, final; determinate; absolute and unconditional: as, a peremptory action or exception.

Fully resolved; resolute; determined; positive in opinion or judgment; dogmatic: said of persons.

Positively settled upon; that positively must be done, etc.

Synonyms and Authoritative, Dogmatic, etc. See magisterial.