megastar

the word 'megastar' is a modern compound, a product of 20th-century media culture. its first element, 'mega-', is borrowed directly from greek, where 'megas' signified physical size and greatness. in english, it functions as a productive prefix denoting an extreme or amplified scale. the second element, 'star', has a long journey from its old english roots as a term for a celestial body to its metaphorical use for a distinguished person by the 1820s. the fusion of these elements logically creates a term for a celebrity whose fame is perceived as being of colossal, superlative magnitude, far exceeding that of a typical 'star'.

Structure: mega (very large) + star (celebrity) mega (from greek 'megas', meaning 'great, large'; serves as an intensifying prefix in english). star (from old english 'steorra', meaning 'celestial body'; used metaphorically for a famous or brilliant person).