old hat (?.)

• antique
• archaic
• back-number
• banal
• behind the times
• bewhiskered
• bromidic
• common
• commonplace
• corny
• cut-and-dried
• dated
• demode
• fade
• familiar
• fusty
• hackney
• hackneyed
• has-been
• moth-eaten
• musty
• old-fashioned
• old-time
• old-timey
• oldfangled
• out of fashion
• out of season
• out-of-date
• outdated
• outmoded
• platitudinous
• set
• square
• stale
• stereotyped
• stock
• styleless
• threadbare
• timeworn
• trite
• truistic
• unfashionable
• unoriginal
• warmed-over
• well-known
• well-worn
• worn
• worn thin