IPA: /pəˈrɛmptəˌrɪli/
KK: /pəˈrɛmptəˌrɪli/
In a way that is assertive and demands immediate attention or obedience, often without allowing for any response or delay.
The manager spoke peremptorily, insisting that the project be completed by the end of the week.
Peremptorily → It is formed from "peremptorius" (from Latin, meaning final or decisive) and the adverbial suffix "-ly" (meaning in a manner). The word "peremptorily" means in a final or decisive manner, often implying that something must be done without delay or refusal.
Think of something being done in a 'final' way ('peremptorius') — that's why 'peremptorily' means acting decisively.