The word "supersexy" is a modern English compound formed by intensifying the adjective "sexy." The prefix "super," derived from the Latin preposition meaning "above" or "beyond," is a productive morpheme in English used to denote an extreme or exceptional degree. The base word "sexy" originates from the noun "sex," which entered English from Old French and ultimately from Latin sexus, referring to the division into male and female. By adding the adjective-forming suffix "-y," "sexy" came to mean "characterized by or appealing to sexual interest." Therefore, "supersexy" logically builds from these components to signify something or someone that is exceptionally and powerfully sexually attractive, amplifying the quality denoted by the root.

Structure: super (above, beyond) + sexy (sexually attractive) - super: From Latin super (above, over, beyond). A prefix indicating an extreme degree or excess. - sexy: From English sex (the state of being male or female) + the suffix -y (characterized by). The modern sense of "sexually attractive" emerged in the early 20th century.