English
imperiously
From imperious + -ly.
A compound of imperious + -ly
Proto-Indo-European *perh₃- ‘to grant’
…
Latin parō ‘prepare, arrange’
Latin imperō ‘command, order’
Latin imperium ‘command, authority, power’
Latin imperiōsus ‘mighty, powerful’
English imperious
Today it means
adv In an imperious manner; in the style of an emperor.
Language periods are conventional ranges, not dates for this word.
Etymograph / imperiously