1275-1325;Middle English < Anglo-French;Middle Frenchdeu, past participle of devoir < Latindēbēre to owe; see debt
Can be confused
dew, do, due (see synonym study at do; see usage note at the current entry)
11.Due to as a prepositional phrase meaning “because of, owing to” has been in use since the 14th century: Due to the sudden rainstorm, the picnic was moved indoors. Some object to this use on the grounds that due is historically an adjective and thus should be used only predicatively in constructions like The delay was due to electrical failure. Despite such objections, due to occurs commonly as a compound preposition and is standard in all varieties of speech and writing.
mid-14c., from O.Fr. deu, pp. of devoir "to owe," from L. debere "to owe" (see debt). In reference to points of the compass (e.g. due east) it is attested from c.1600, originally nautical, from notion of "fitting, rightful."