A pop sock, also known as a sockette, is a small, thin sock that covers just the feet and ankles. These socks are commonly used for sports activities or worn with certain types of shoes like loafers or slip-ons. Some synonyms for the word "pop sock" include footie, low-cut sock, ankle sock, half sock, and liner sock. These terms are often used interchangeably, but can also differ slightly in style or material. Regardless of the synonym used, pop socks are a versatile and practical addition to any wardrobe.