desechar
discard
des-
un-, dis-
+
echar
to throw
Desechar means to discard and can be thought of as des-0 (un-, dis-0) + echar1 (to throw1), literally meaning 'to un-throw' or 'to throw away'.
verb
  1. discard
    To discard or throw away something
    Debes desechar los alimentos que ya están caducados. // You should discard the food that has already expired.