A sweater with no collar.
cardigan
Nobody. Shakespeare never used the word "sweater".
A collarless sweater is commonly referred to as a "crewneck" sweater. This style features a round neckline without any collar and is popular for its simplicity and versatility. Crewneck sweaters can be made from various materials and are suitable for both casual and semi-formal occasions.
An 'open neck' or a 'V neck'.
There are many stores that sell collarless shirts. This would depend what brands you like. Once you find the brand you like, then it would be easy to find the collarless shirts.
Kurta
Peter Shaffer
Collarless shirts are worn at various occasions but mostly around the spring and summer seasons. This is also considered as a persons preference and opinion.
Tom Goes to the Mayor - 2004 White Collarless 2-4 was released on: USA: 26 June 2006
ölittle black jacket
A Bill Cosby sweater is another term for a Cosby sweater, an oversized sweater featuring a loud, kitschy pattern.
there isn't a prefix for sweater