English edit

Etymology 1 edit

un- +‎ sprung

Adjective edit

unsprung (not comparable)

  1. Not sprung.
    an unsprung trap
    the unsprung weight of a vehicle
    • 1947 January and February, “Gas Turbine-Electric Locomotive for G.W.R.”, in Railway Magazine, page 26:
      The locomotive is carried on two six-wheel bogies, the outer axles of each bogie being driven by series type d.c. motors, completely suspended to reduce the unsprung weight to a minimum.
    • 1960 February, “Letters to the Editor”, in Trains Illustrated, page 125:
      Amongst the factors peculiar to electric m.u. traction are the heavy unsprung weight of the motors (generally, the greater the weight, the worse is the riding); [] .
  2. Not fitted with springs; lacking springs.
    • 2000, Bob Foster, Birdum or Bust!, Henley Beach, SA: Seaview Press, page 169:
      He had an unsprung trailer for the job[.]

Etymology 2 edit

Verb edit

unsprung

  1. simple past and past participle of unspring