dispiriting

adjective

Pronunciation: /dɪˈspɪɹɪtɪŋ/

Lowering the morale of; making despondent or depressive; disheartening.
“Luckily, though, the sumptuous, eerie look and mood of the movie make it possible to ignore this dispiriting and superfluous adherence to convention.”
“Kane's late leveller will make a big difference to England's morale before two home games against Italy and Hungary, as a second successive loss would have been dispiriting for a side suffering a physical and mental toll after such a long season.”