anegar
flood
a-
to, towards
+
negate
to deny or nullify
Anegar means to flood. It can be remembered as a-0 (to0) + negate1, as flooding negates1 or nullifies the normal use of an area.
verb
  1. flood
    To flood or inundate with water
    Las fuertes lluvias anegaron las calles de la ciudad. // The heavy rains flooded the city streets.