Comments:Used also in the binome 夭紹 *ʔaw-d(h)awʔ 'beautiful'. Also read *ʔawʔ, MC ʔéw(FQ 於兆), Pek. yǎo 'to kill prematurely'. Since Late Zhou the meaning 'be beautiful; consider beautiful, love' was usually written by the character 妖. The latter also means 'ghostly, supernatural': whether it is just a semantic development of the original meaning or an independent word is not quite clear.
Since Late Zhou the character is also attested with a reading *ʔāwʔ, MC ʔấw (FQ 烏皓), Pek. ǎo 'young, young age' (possibly related to *ʔawʔ 'kill prematurely' = 'kill in a young age').