What would the Bachelor mansion be with a hot tub or two casually waiting around the corner at any given moment?
“Yeah, Sammy got covered up,” was the way they casually referred to it.
During his call-in show, by the way, he casually admitted that they were, in fact, Russian soldiers.
late 14c., "subject to or produced by chance," from Middle French casuel (15c.), from Late Latin casualis "by chance," from Latin casus "chance, occasion, opportunity; accident, event" (see case (n.1)).
Of persons, in the sense of "not to be depended on, unmethodical," it is attested from 1883; meaning "showing lack of interest" is from 1916. Of clothes, "informal," from 1939. Related: Casually.