1) Antiquated 2) Demode 3) Demoded 4) Demode 5) Ex 6) Obsolete 7) Old 8) Old hat 9) Outdated 10) Outofdate 11) Passe 12) Passee 13) Rusty 14) Unfashionable 1) Antique 2) Demode 3) Gone out of style 4) No longer usable 5) Obsolete 6) Old-fashioned 7) Old-hat 8) Out of fashion 9) Outmoded teaching methods 10) Passe 11) Passee 12) Unfashionable 13) Unstylish 
gone out of style; no longer fashionable: outmoded styles. · not acceptable by present standards; no longer usable; obsolete: outmoded dwellings; outmoded teaching methods.
[PSAT glossary] out of fashion