old; no longer in use or valid or fashionable; "obsolete words"; "an obsolete locomotive"; "outdated equipment"; "superannuated laws"; "out-of-date ideas"
the body of members of an organization or group; "they polled their membership"; "they found dissension in their own ranks"; "he joined the ranks of the unemployed"
(of e.g. volcanos) permanently inactive; "an extinct volcano"
being out or having grown cold; "threw his extinct cigarette into the stream"; "the fire is out"
no longer in existence; lost or especially having died out leaving no living representatives; "an extinct species of fish"; "an extinct royal family"; "extinct laws and customs"