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Related to peremptoriness: Peremptory strike
a. Subject to no further debate or dispute; final and unassailable: a peremptory decree.
b. Not allowing contradiction or refusal; imperative: The officer issued peremptory commands.
2. Offensively self-assured; imperious or dictatorial: a swaggering, peremptory manner.
[Latin perēmptōrius, from perēmptus, past participle of perimere, to take away : per-, per- + emere, to obtain; see em- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.