Definify.com
Webster 1828 Edition
De
DE
, a Latin prefix, denotes a moving from, separation; as in debark, decline, decease, deduct, decamp. Hence it often expresses a negative; as in derange. Sometimes it augments the sense, as in deprave, despoil. It coincides nearly in sense with the French des and L. dis.DE
'ACON,Noun.