Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Adjective: umpteenth  'úm(p)'teenth
  1. Last in an indefinitely numerous series
    "After a tedious forty-five minutes, Lucy dropped the umpteenth shoe box at her side and crawled over to the closet door";
    - umteenth, umptieth

See also: ordinal

Encyclopedia: Umpteenth