Designed to fit closely and follow the contours of a body or shape; snugly conforming to curves.
From 'form' (shape, body) + 'fitting' (fitting well, suiting). A relatively modern compound that became common in fashion and clothing terminology during the 20th century.
Fashion marketing loves this word—it sounds technical and precise, making fabric sound engineered rather than just 'tight,' which is why you'll see 'formfitting' on designer clothing tags instead of simpler words.
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