The word "unbusy" refers to a lack of activity or busyness. Its antonyms are numerous and include terms such as active, bustling, busy, engaged, occupied, and productive. These antonyms all suggest a state of being involved in numerous activities or tasks, which all require attention and effort. Busy individuals can be described as multitasking, diligent, focused, and efficient in their work. While unbusy people can be viewed as idle, lethargic, unproductive, or even lazy. The antonyms of unbusy help to convey the opposite of a state of rest or inactivity, emphasizing instead a state of movement, progress, and accomplishment.