Broken-down
Part of speech: adjective
Definition: no longer in working order not properly maintained; neglected
Unserviceable
Part of speech: adjective
Definition: unusableimpractical
Broken-down as an adjective is no longer in working order while Unserviceable as an adjective is unusable
Part of speech: adjective
Definition: no longer in working order not properly maintained; neglected
Part of speech: adjective
Definition: unusableimpractical
We hope you now know whether to use Broken-down or Unserviceable in your sentence.