Something which discourages; a disheartening or deterrent fact, circumstance, event, etc.

The action of dishearten, v.; discouragement.

figurative an unpleasant or discouraging experience, revelation, etc.; circumstances, events, etc., that have an inhibiting or subduing effect.

Also depressent. A depressing influence.

A source of discouragement, esp. to economic progress or development. Also as adj.

a discouraging or deterring effect on the behaviour of an individual or group, esp. the inhibition of the exercise of a constitutional right…