More about cosplay
Cosplay is a blend of costume and play, but the combination is masking a much more complex performance. Japanese borrowed the English compound noun costume play (as in theater) and rendered it into its sound system as kosuchūmu-purē, which was shortened by the 1980s to kosupure and narrowed to the more specific sense “the art or practice of wearing costumes to portray characters from fiction, especially from manga, animation, and science fiction” (as well as characters from video games). English borrowed back kosupure and refashioned it as cosplay by the 1990s. Japanese words like kosupure are considered pseudo-English Japanese coinages known as wasei-eigo. Other familiar examples adopted into English from Japanese include salaryman, anime, and Pokémon, the latter itself a popular subject of cosplay.