Cap

Soft, Brimless or Peaked: What Makes a Cap a Cap

The cap is the loosest and most useful word in headwear, and its definition is deliberately simple. A cap is a form of headgear, generally soft, and often with no brim, or just a peak. Every part of that short definition does work. Soft separates the cap from stiff, blocked hats that hold a manufactured shape. No brim separates brimless caps from hats, whose brims run around the crown. Just a peak allows in the large family of peaked caps, of which the baseball cap, with its single forward peak, is the most familiar modern example. A cap therefore does not need a particular crown shape, fastening or material to earn its name; it needs softness and the absence of a full brim, and within that generous boundary an enormous range of specific kinds fits, including the kepi named among specific kinds of caps.

That breadth is why cap is so often the second word in a more precise name. The first word does the specifying, flat, baseball, smoking, and the word cap does the classifying, telling the reader at once that the item is soft headgear rather than a structured hat or a tied covering such as a bonnet. When a garment could be called either, the distinctions on this page are the test to apply: soft construction, no brim or only a peak, and a fit that follows the head rather than a shape imposed on it. If those hold, cap is the accurate general term, whatever the style's own name may be.

Centuries of Women's Caps, and the Indoor Muslin Cap

The modern sporting cap is only the latest chapter. For many centuries women wore a wide variety of head-coverings which were called caps, a tradition long enough that cap was a standard word for women's head dress well before it was a standard word for men's sportswear. The clearest late example comes from the 18th and 19th centuries, when a cap was a kind of head covering made of a flimsy fabric such as muslin, worn indoors. Indoor is the key detail. This cap was not weather protection and not outdoor fashion; it was part of dress inside the house, covering the hair in a light fabric that suited a domestic setting.

Who wore it also carried social meaning at the time. These indoor caps were worn by married women, or by older unmarried women who were described as on the shelf, with the mob-cap as the example of the type. A modern reader should take that as a record of how dress signalled marital status and age in that period: the same soft, flimsy cap that looks like a simple house covering to modern eyes was, in its own setting, a recognised marker that placed the wearer in a particular stage of life. Read together, the two halves of the cap's history explain its staying power. As men's and sporting headwear, the cap offers soft, close, peak-shaded practicality. As women's headwear over many centuries, it offered light, washable, indoor coverage in fabrics such as muslin. Both uses grow from the same defining qualities, softness, closeness to the head and freedom from a formal brim, and both are still visible every time the word cap is used today, from a baseball cap pulled on outdoors to the historical caps preserved in costume collections.

For anyone describing, cataloguing or choosing headwear, the cap is therefore the right starting term and rarely the sufficient one. Start with cap to establish the family, soft headgear with no brim or only a peak, then add the qualifier that carries the real information: the sport, the fabric, the period or the setting. A baseball cap, a muslin indoor cap and a kepi share almost nothing in appearance, purpose or social meaning, yet all three are honestly caps, which shows both the strength and the limit of the word. It classifies reliably, it describes loosely, and it has done both jobs, for men's, women's and children's headwear alike, for many centuries, which is why it remains the most durable general headwear term in the language.