IMPE'RIOUS, adjective [Latin imperiosus.] 1. Commanding; dictatorial; haughty; arrogant; overbearing; domineering; as an imperious tyrant; an imperious dictator; an imperious man; an imperious temper. 2. Commanding; indicating an imperious temper; authoritative; as imperious words. 3. Powerful; overbearing; not to be opposed by obstacles; as a man of a vast and imperious mind. 4. Commanding; urgent; pressing; as imperious love; imperious circumstances; imperious appetite. 5. Authoritative; commanding with rightful authority. The commandment high and imperious in its claims.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI