cannibalize v.

"human that eats human flesh," 1550s, from Spanish canibal, caribal "a savage, cannibal," from Caniba, Christopher Columbus' rendition of the Caribs' name for themselves (often given in modern transliterations as kalino or karina; see Carib, and compare Caliban).

The natives were believed by the Europeans to be anthropophagites. Columbus, seeking evidence that he was in Asia, thought the name meant the natives were subjects of the Great Khan. The form was reinforced by later writers who connected it to Latin canis "dog," in reference to their supposed voracity, a coincidence which "naturally tickled the etymological fancy of the 16th c." [OED]. The Spanish word had reached French by 1515. Used of animals from 1796. An Old English word for "cannibal" was selfæta.

word-forming element used to make verbs, Middle English -isen, from Old French -iser/-izer, from Late Latin -izare, from Greek -izein, a verb-forming element denoting the doing of the noun or adjective to which it is attached.

The variation of -ize and -ise began in Old French and Middle English, perhaps aided by a few words (such as surprise, see below) where the ending is French or Latin, not Greek. With the classical revival, English partially reverted to the correct Greek -z- spelling from late 16c. But the 1694 edition of the authoritative French Academy dictionary standardized the spellings as -s-, which influenced English.

In Britain, despite the opposition to it (at least formerly) of OED, Encyclopaedia Britannica, the Times of London, and Fowler, -ise remains dominant. Fowler thinks this is to avoid the difficulty of remembering the short list of common words not from Greek which must be spelled with an -s- (such as advertise, devise, surprise). American English has always favored -ize. The spelling variation involves about 200 English verbs.