unbraked

From un- +‎ braked.

unbraked (not comparable)

1. not fitted with brakes. (of a vehicle)

   Synonym: non-braked

   • 1963 January, G. Freeman Allen, “Why B.R. are dropping high-power diesel-hydraulics”, in Modern Railways, page 25:

     The Modernisation Plan of 1955 forecast the brake-fitting of all goods wagons; but the majority of mineral wagons remain loose-coupled and unbraked and a four-axle locomotive of Type 3 or 4 power is, therefore, unsuitable for heavy mineral work - without a fitted "head" on the train - because of inadequate braking power.

unbraked

1. simple past and past participle of unbrake

• unbarked