Becoming fatigued is a common experience for many people. It is the result of physical or mental exhaustion, and can be caused by a variety of factors such as lack of sleep, overworking, or stress. The term 'become fatigued' can be expressed in two ways: TIRE (4 letters) and grow weary (9 letters). TIRE is a verb meaning to become exhausted, while grow weary is an adjective describing a feeling of weariness. Both terms refer to the same concept of becoming fatigued.