ansiar
to crave
anxious
eager, worried
+
-ar
verb suffix
Ansiar means to crave and can be thought of as related to anxious0 + -ar1, implying an eager, anxious desire0 as a verb1.
verb
  1. to crave
    To long for or desire intensely
    Ansío volver a ver a mi familia después de tanto tiempo. // I long to see my family again after so much time.