- (transitive) To reduce the velocity of something.
- (transitive) To reduce the rate of advancement of something, such as a disease.
- (intransitive) To go slower.
- 1961 October, “The winter timetables of British Railways: Western Region”, in Trains Illustrated, page 590:
- One of the disadvantages of increasing intermediate stops is that, as we have pointed out already, certain prestige trains have to suffer, notably the "Cornish Riviera Express", slowed 15min to Plymouth by stops at Taunton and Exeter; the "Torbay Express", decelerated 18min by stops at Reading, Westbury, Taunton and Newton Abbot; and the "Bristolian", which adds 14min in order to allow for a Bath stop and an increased load.
reduce the velocity of something
reduce the rate of advancement of something
to go slower