vagar
wander
vague
not clearly expressed or perceived
+
-ar
verb suffix
Vagar means to wander and can be remembered by thinking of the English word vague0 (not clearly expressed or perceived0) with the Spanish verb suffix1 -ar1. When you wander, your destination is often vague.
verb
  1. wander
    To wander or roam without a fixed purpose or destination
    Me gusta vagar por las calles de la ciudad vieja. // I like to wander through the streets of the old city.