'outdated' definitions:

Definition of 'outdated'

(from WordNet)
adjective
Old; no longer valid or fashionable; "obsolete words"; "an obsolete locomotive"; "outdated equipment"; "superannuated laws"; "out-of-date ideas" [syn: outdated, out-of-date, superannuated]

Synonyms of 'outdated'

From: Moby Thesaurus