The word "bleary" has evolved from its early use in describing blurred or unclear vision to its modern usage as a descriptor for exhaustion or lack of clarity, particularly in reference to tired eyes. Its metaphorical use, to describe mental or emotional fatigue, has also become widespread in popular culture. Whether describing the physical appearance of someone who has not slept, or someone whose thoughts are unfocused due to exhaustion, "bleary" captures the effects of fatigue both physically and emotionally. It remains an evocative term that adds a layer of depth to descriptions of weariness.
Despite its common usage, "bleary" remains a relatively informal term, often found in casual conversation and storytelling. It’s a versatile word that conveys a certain vulnerability, invoking empathy or a sense of shared experience, especially when paired with expressions of mental or physical exertion.