A sweater, also called a jumper in British English,is a piece of clothing, typically with long sleeves, made of knitted or crocheted material, that covers the upper part of the body. When sleeveless, the garment is often called a slipover or sweater vest.

Sweaters are worn by adults and children of all genders, often over a shirt, blouse, T-shirt, or other top, but sometimes next to the skin. Sweaters were traditionally made from wool but can now be made of cotton, synthetic fibers, or any combination of these. There are also seasonal sweaters, which around Christmas are called "ugly sweaters".

Etymology

According to British dictionaries, "sweater" is used in British English in the same sense as in American English but "jumper" is commonly used instead (though some say that "sweater" is used for heavier ones worn for warmth).Oxford University states that in British usage sweaters are always pulled over the head and jumpers are not necessarily,whereas most or all other British dictionaries disagree and say that sweaters are not necessarily pullovers or even say that jumpers are always pullovers, i.e. never open in front.

The OED gives "sweater" as appearing in 1882 and gives its definition as "A woollen vest or jersey worn in rowing or other athletic exercise, originally...in order to reduce one's weight; now commonly put on also before or after exercise to prevent taking cold. Hence a similar garment for general informal wear; a jumper or pullover"

According to most British dictionaries, British usage agrees with what American dictionaries describe as American English usage, according to which a sweater is either a pullover or a cardigan (which opens at the front). Almost all British dictionaries include cardigans as a type of sweater but at least one includes cardigans as a type of jumper (i.e. most British dictionaries consider "sweater" – and at least one considers "jumper" – to be a hypernym for both pullovers and cardigans).^{[citation needed]}

Types and design

The term "sweater" is a catch-all for a variety of knit garments. Although the term often refers to a pullover, it can also refer to a cardigan, a garment that opens and fastens down the front. Within either group, there is a great variety of design. Various necklines are found, although the V-neck, turtleneck and the crew neck are the most popular. The hemline is typically at hip height or slightly longer, just overlapping the waist of one's pants or skirt, but can vary significantly. It can range from just below the bust in women's garments to mid-thigh in either sex, or even longer in a knitted variation of the poncho shirtdress. The sleeve length is also variable, ranging from full-length or three-quarters to short-sleeved, cap sleeves or sleeveless. The front seam or opening of a cardigan allows for further different styles, such as a surplice or a bolero jacket. All hems may have various types of borders, such as picots, ribbing and frills.

Knitted fabrics are generally somewhat elastic and have a softer hand (feel or drape) than woven fabric. Sweaters that are more tightly fitted or have a soft drape may conform well to the body without requiring tailoring necessary in a woven garment such as darts, flares and gores. Even when such shaping is used, it can be knit into the fabric itself, without requiring seams.

Another type is a sweater vest.

Nomenclature

A sweater with an open front fastened by buttons or a zipper is generally called a cardigan, but the nomenclature for other styles in different dialects can be quite confusing. In British English, a sweater may also be called a pullover, jumper or jersey. In the United States however, "jumper" refers to a style of women's sleeveless dress, worn over a blouse or shirt, and "jersey" refers to a knit shirt, especially if part of an athletic uniform. If sleeveless, such a garment may be called a "slipover" or "tank top" in British English, while "tank top" in US English refers to a sleeveless shirt or undershirt. In the U.S. a sleeveless sweater may also be called a sweater vest, especially if it has a V-neck and somewhat formal appearance resembling a formal vest, a garment known as a waistcoat in the UK. In British English, "vest" refers to an undershirt. In South African English, a knitted sweater is always called a jersey, while sweater, when used, refers to a sweatshirt. In the sport of ice hockey, the top of a hockey player's uniform had traditionally been a sweater; and even though modern hockey uniform tops are more commonly a jersey they are typically referred to as a "hockey sweater," regardless of the style, but frequently, in the U.S. it is called a hockey "jersey".