demotivateverb [ T ]
uk/ˌdiːˈməʊ.tɪ.veɪt/us/ˌdiːˈmoʊ.t̬ə.veɪt/to make someone less enthusiastic about a job:
She was very demotivated by being told she had little chance of being promoted.
demotivating
adjective uk/ˌdiːˈməʊ.tɪ.veɪ.tɪŋ/us/ˌdiːˈmoʊ.t̬ə.veɪ.t̬ɪŋ/
Constant criticism can be very demotivating.