Oversized/ˈəʊvərsaɪzd/ Definition 1 of 2Pro Tip 1/3Not Always Positive The term can imply unnecessary excess, not just big size. The oversized decoration made the room feel cluttered. Pro Tip 2/3Fashion Statement 'Oversized' can be a style choice, implying a trendy, loose fit. Her oversized jacket was the highlight of her trendy outfit. Pro Tip 3/3Comfort Implication Items are often oversized for extra comfort or a casual look. He lounged in his oversized armchair.