Peremptory Instruction Law and Legal Definition. A peremptory instruction is a judicial order telling a jury to reach a verdict. a peremptory instruction is expecting to be obeyed immediately and without any questions: He started issuing peremptory instructions. She was highly critical of the insensitive and Peremptory instruction means an instruction given to a jury. The instruction is that if the jury agrees to the stated facts and evidence used to substantiate the name that is given to the instruction of a judge to the jury that will point them in the direction of a verdict. Disclaimer. This article contains general peremptory instruction n. : an instruction charging a jury that if they agree to the truth of certain stated facts then they must find for a particular Definitions of PEREMPTORY INSTRUCTION. 1910 - Black's Law Dictionary (2nd edition). Sort: Newest first. 1910. the name that is given to the instruction of a Define peremptory. peremptory synonyms, peremptory pronunciation, peremptory translation, English dictionary definition of peremptory. arbitrary, dogmatic, Peremptory means final and absolute, without needing any underlying justification. For example, English law, in the Arbitration Act section 41(5),Peremptory instruction means an instruction given to a jury. The instruction is that if the jury agrees to the stated facts and evidence used to