Is it sunglass or sunglasses?
2025-05-10
The question “Is it sunglass or sunglasses?” often puzzles English learners, and the answer lies in the word’s etymology and usage. The term “sunglass” first appeared in the 18th century, originally referring to a single lens used to protect one eye from the sun. However, as eyewear technology evolved, the modern form of protective eyewear designed for both eyes became the norm. Today, “sunglasses,” with its plural form, dominates common usage, reflecting the two-lens structure of most sun-protective eyewear.
Grammatically, “sunglasses” functions as a plural-only noun, similar to “scissors,” “pants,” or “glasses.” We say “a pair of sunglasses” because the item consists of two interconnected parts working in tandem. For example, “She bought a stylish pair of sunglasses for her beach vacation.” In contrast, “sunglass” in contemporary English is rarely used alone. When it does appear, it often serves as a modifier, as in “sunglass case” or “sunglass strap,” where it describes other objects related to eyewear.
Exceptions exist in specialized contexts. In optometry, “sunglass” might refer to a single lens, particularly when discussing lens replacement or repairs. Additionally, some manufacturers use “sunglass” in product names to create a sleek, minimalist effect, like “The Ultra-Light Sunglass Collection.” However, these instances deviate from standard English and can be misleading.
To avoid confusion, remember that in everyday speech and writing, “sunglasses” is the correct term for the protective eyewear we wear. Whether you’re describing a fashion accessory or discussing UV protection, always use the plural form—unless you’re referring to a single component in a technical context. Embracing this distinction ensures clear communication and linguistic accuracy.
