He had been shouting all day and his voice had gone hoarse.
Tips
usage
嗄 (shà) meaning 'hoarse' is a classical or literary character. In everyday Mandarin, 沙哑 (shāyǎ) is the common word for hoarse. 嗄 also has a second reading (a2) as a variant of 啊, used in questions in some dialects.
Left mouth radical - pictograph of an open mouth. The semantic anchor for 嗄, since hoarseness is a property of the voice and throat. Most chars built on left-side 口 relate to speech, sound, or eating: 叫 to call, 吃 to eat, 唱 to sing, 喊 to shout.
Right 夏 provides the phonetic - xià drifting to shà via well-attested initial shift. 夏 contributes only sound here, no summer imagery. The character is rare in modern Mandarin; 嗄 also appears in 嗓子嗄了 'voice gone hoarse,' often replaced by 哑 in everyday writing.