Also means
to undermine
Usage Note
Debilitar is a regular -ar verb derived from débil (weak). It is used both physically (la enfermedad debilitó su cuerpo, the illness weakened his body) and abstractly (debilitar una argumentación, to undermine an argument). The reflexive debilitarse means to grow weak or be weakened over time.
Examples
"El estrés prolongado puede debilitar el sistema inmune."
Natural Translation
Prolonged stress can weaken the immune system.

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