Per"emp*to*ry (?), a. [L. peremptorius destructive, deadly, decisive, final: cf. F. péremptorie. See Perempt.] 1. Precluding debate or expostulation; not admitting of question or appeal; positive; absolute; decisive; conclusive; final.

Think of heaven with hearty purposes and peremptory designs to get thither.
Jer. Taylor.

2. Positive in opinion or judgment; decided; dictatorial; dogmatical.

Be not too positive and peremptory.

Briefly, then, for we are peremptory.

3. Firmly determined; unawed. [Poetic] Shak.

Peremptory challenge (Law) See under Challenge. -- Peremptory mandamus, a final and absolute mandamus. -- Peremptory plea, a plea by a defendant tending to impeach the plaintiff's right of action; a plea in bar.

Syn. -- Decisive; positive; absolute; authoritative; express; arbitrary; dogmatical.