Source : Webster's Revised Unabridged Dictionary (1913)

Patronless \Pa"tron*less\, a.
   Destitute of a patron.

Source : WordNet®

patronless
     adj : having little patronage or few clients; "a restaurant
           unpatronized by the elite" [syn: {unpatronized}, {unpatronised}]
           [ant: {patronized}]