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hype (n.)

"excessive or misleading publicity or advertising," 1967, American English (the verb is attested from 1937), probably in part a back-formation of hyperbole, but also from underworld slang verb hype "to swindle by overcharging or short-changing" (1926), itself a back-formation from hyper "short-change con man" (1914), from the prefix hyper- meaning "over, to excess."

Also possibly influenced by drug addicts' slang hype, shortening of hypodermic needle (1913). Related: Hyped; hyping. In early 18c., hyp "morbid depression of the spirits" was colloquial for hypochondria (usually as the hyp or the hyps).

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Definitions of hype from WordNet
1
hype (v.)
publicize in an exaggerated and often misleading manner;
2
hype (n.)
blatant or sensational promotion;
Synonyms: ballyhoo / hoopla / plug
From wordnet.princeton.edu