Peremptory

прилагательное [литературно-книжное] 1) а) безапелляционный, не допускающий возражения; безоговорочный, категорический б) догматический; доктринёрский Синоним(ы): dogmatic 2) властный, повелительный; высокомерный Например: in a peremptory tone — повелительным тоном Синоним(ы): imperative, authoritative, haughty 3) [юриспруденция] безусловный, окончательный

Большой англо-русский словарь

Peremptory

adjective Etymology: Middle English peremptorie, from Anglo-French, from Late Latin and Latin; Late Latin peremptorius, from Latin, destructive, from perimere to take entirely, destroy, from per- thoroughly + emere to take — more at redeem 1. a. putting an end to or precluding a right of action, debate, or delay; specifically not providing an opportunity to show cause why one should not comply Example: a peremptory mandamus b. admitting of no contradiction 2. expressive of urgency or command Example: a peremptory call 3. a. characterized by often imperious or arrogant self-assurance Example: how insolent of late he is become, how proud, how peremptory — Shakespeare b. indicative of a peremptory attitude or nature; haughty Example: a peremptory tone Example: peremptory disregard of an objection Synonyms: see masterfulperemptorily adverbperemptoriness noun

Merriam-Webster's Collegiate Dictionary