unserviceable

/AH0 N S ER1 V AH0 S AH0 B AH0 L/
adjective
  1. 1

    Unusable; of no use.

    syn:u/s
  2. 2

    Not working (machinery, etc).

  3. 3

    Impractical.

Synonyms

Source: https://en.wiktionary.org/wiki/unserviceable