Chinese words pronounced ao (any tone) 31 words, in the 4 tones ao is read in. āo (1st tone) 2 words 熬(āo) to simmer 凹(āo) concave 熬(āo) to simmer 凹(āo) concave áo (2nd tone) 15 words 嶅(áo) hill strewn with stones 熬(áo) to cook on a slow fire 鳌(áo) mythological sea turtle 敖(áo) surname Ao 螯(áo) chela 嶅(áo) hill strewn with stones 熬(áo) to cook on a slow fire 鰲(áo) mythological sea turtle 敖(áo) surname Ao 螯(áo) chela All 15 words pronounced áo ǎo (3rd tone) 3 words 袄(ǎo) coat 拗(ǎo) to twist 媪(ǎo) old woman 襖(ǎo) coat 拗(ǎo) to twist 媼(ǎo) old woman ào (4th tone) 13 words 奥(ào) Austria 澳(ào) Macao 拗(ào) intractable 傲(ào) proud 懊(ào) to regret 奧(ào) Austria 澳(ào) Macao 拗(ào) intractable 傲(ào) proud 懊(ào) to regret All 13 words pronounced ào