Meaning

noun a soldier who serves as an attendant to a superior officer

noun a male hospital attendant who has general duties that do not involve the medical treatment of patients

adjective devoid of violence or disruption

originEtymology tree English order Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-West Germanic *-līk Old English -līċ Middle English -ly English -ly English orderly From order + -ly.

Etymology from Wiktionary, CC BY-SA 3.0