1. to cause someone to lose enthusiasm, confidence, or willingness to work or try
The constant criticism can demotivate even the most dedicated employees.
A crítica constante pode desmotivar até os funcionários mais dedicados.
2. to reduce or eliminate someone's motivation or drive
Failing repeatedly tends to demotivate students from pursuing further studies.
Falhar repetidamente tende a desmotivar os alunos a prosseguir com os estudos.