Synonyms for Down the drain:

• adj.

  •defunct (adjective)
  • by-gone,
  • de-parted,
  • in-operative,
  • in animate,
  • down drain,
  • de ceased,
  • out commission,
  • by gone,
  • de parted,
  • most expired,
  • de-ceased,
  • most exanimate,
  • in valid,
  • ex-animate,
  • non existent,
  • exanimate,
  • in-animate,
  • more exanimate,
  • in-valid,
  • Non-existent,
  • in operative,
  • ex animate,
  • had it,
  • more expired.
  •gone (adjective)
  • more nonextant,
  • with-drawn,
  • most consumed,
  • more quit,
  • re-tired,
  • most decamped,
  • more disintegrated,
  • most runoff,
  • dis-solved,
  • most disappeared,
  • more passed,
  • more dissolved,
  • most nonextant,
  • not sign of,
  • most split,
  • more shifted,
  • dis placed,
  • most run-off,
  • most shifted,
  • more elapsed,
  • turned dust,
  • dis-integrated,
  • most disintegrated,
  • re tired,
  • dis-placed,
  • most elapsed,
  • most passed,
  • more run off,
  • more disappeared,
  • with drawn,
  • most quit,
  • most run off,
  • dis solved,
  • most dissolved,
  • more run-off,
  • de-camped,
  • more flown,
  • taken powder,
  • dis integrated,
  • more away,
  • more decamped,
  • non-extant,
  • more consumed,
  • more runoff,
  • out window,
  • more split,
  • non extant,
  • most flown,
  • dis-appeared,
  • re moved,
  • dis appeared,
  • most away,
  • de camped.
  •kaput (adjective)
  • belly-up,
  • all washed up,
  • nonfunctioning,
  • kaput,
  • on the skids,
  • down the tubes,
  • belly up,
  • out of circulation,
  • non-functioning,
  • down and out,
  • down for the count,
  • totaled,
  • washed up.
  •lost (adjective)
  • irretrievable,
  • fallen between cracks,
  • cast away,
  • kiss goodbye,
  • at sea,
  • gone astray,
  • nowhere to be found,
  • off course,
  • unredeemed,
  • irrecoverable.
  •misspent (adjective)
  • mis-spent,
  • more squandered,
  • mis spent,
  • more profitless,
  • mis applied,
  • most misapplied,
  • most profitless,
  • most squandered,
  • more misapplied,
  • mis-applied.
  •spent (adjective)
  • donein,
  • more burntout,
  • more done in,
  • most far gone,
  • more far gone,
  • more played out,
  • most burntout,
  • more disbursed,
  • more playedout,
  • most donein,
  • more far-gone,
  • most fagged,
  • most done-in,
  • most dogtired,
  • more fagged,
  • ex pended,
  • washedup,
  • most dog-tired,
  • most played out,
  • most shot,
  • more shot,
  • more fargone,
  • more shattered,
  • most expended,
  • burntout,
  • most burnt-out,
  • ex-pended,
  • most dog tired,
  • more dog-tired,
  • dogtired,
  • most disbursed,
  • more done-in,
  • most fargone,
  • more burnt out,
  • more played-out,
  • more donein,
  • most played-out,
  • most burnt out,
  • most shattered,
  • playedout,
  • more dog tired,
  • more burnt-out,
  • most far-gone,
  • fargone,
  • most playedout,
  • more dogtired,
  • ready drop,
  • more expended,
  • most done in.

• Other synonyms:

  •
  • Misspent,
  • underutilized,
  • underused.
  •Other relevant words:
  • extinct,
  • done for,
  • gone to pot,
  • drain,
  • up the spout,
  • annihilated,
  • dead,
  • by the board,
  • all gone,
  • exhausted,
  • vanished,
  • wasted,
  • used,
  • lost to,
  • Perished,
  • pfft,
  • expired,
  • dissipated,
  • finished,
  • squandered,
  • passed away.