Definition of "demoralising"

The Western operating authorities are wisely concentrating their main line diesel power at individual sheds, beginning with Laira, so that engine-crews do not have the rather demoralising experience of switching about constantly between the comfort and ease of diesel handling and the relative discomfort and hard work of the steam footplate, as on other Regions.

1961 February, Cecil J. Allen, “Locomotive Running Past and Present”, in Trains Illustrated, page 86