This is the 9584th most frequent French word.
démotive
"Démotive" means "demotivates" or "disheartens" in English.
In this sentence, 'se démotive' is used reflexively to indicate the subject (she) loses her motivation.
Elle se démotive facilement face aux difficultés.
She loses motivation easily when faced with difficulties.
'Démotive' here is used transitively to convey that an external factor, the criticism, reduces the motivation of the students.
Ce genre de critique démotive souvent les étudiants.
This kind of criticism often demotivates the students.
In this sentence, 'a démotivé' is used in the past tense to describe the action of losing motivation caused by an external factor, in this case, the lack of progress.