dejar
leave
de-
from, away
+
-ar
verb suffix
Dejar means to leave and can be thought of as de-0 (from, away0) + -ar1 (verb1), indicating an action of moving away.
verb
  1. leave
    To leave or abandon
    Voy a dejar mi trabajo. // I'm going to leave my job.
  2. let
    To allow or let
    Déjame explicarte. // Let me explain to you.