歟:
1. See "欤".
2. Particle placed at the end of a sentence, indicating a tone of doubt or rhetorical question. Mostly used in classical Chinese. Equivalent to "ma". Example from Tang Dynasty, Liu Zongyuan's "Record of the Rejuvenation Cave in Lianshan County": "Is this the way of governance, yet is it not auspicious?"
3. Particle indicating an exclamatory tone. Mostly used in classical Chinese. Equivalent to "ah" or "ba". Example from Han Dynasty, Emperor Wu's "Edict of the Worthy": "Not knowing what to rely on, ah! How magnificent!" Example from Song Dynasty, Su Shi's "Discourse on Liu Hou": "Alas! This is why he is called Zifang!"