歟 [欤]

Jyutping 歟
Pinyin yú

Definitions (Wiktionary)

character
used for expressing an exclamatory, doubtful or questioning tone

歟 [欤]

Jyutping jyu4
Pinyin yú

Definitions (CC-CEDICT)

(literary) (final particle similar to 嗎|吗[ma5], 呢[ne5] or 啊[a1])

Definitions (CC-CANTO)

(literary) (final particle similar to 吗ma [吗], 呢ne [呢] or 啊ā [啊], to expression doubt / admiration / surprise / question)

Definitions (Unihan)

a final particle used to express admiration, doubt, surprise, or to mark a question
Cangjie Input - Simplified
YMNO
Cangjie Input - Traditional
HCNO