köstum
Köstum is a noun that refers to clothing or attire worn to transform appearance for performance, disguise, or themed events. The form köstum is not widely attested as an independent word in major languages and is often seen as a misspelling or variant of kostüm (German) or kostüüm (Estonian) for “costume.” In many contexts, the concept is understood through these established terms rather than as a distinct lexical item.
Etymology and linguistic notes establish that the idea of a costume travels across European languages. The
Usage and contexts for köstum, or its correct equivalents, span theater, film, cosplay, Halloween, masquerade balls,
Design and construction involve selecting fabrics, colors, and accessories to reflect character or theme while allowing
See also: costume, kostüm, kostüüm, masquerade, cosplay, attire, fashion.