thumb|O͘ o͘
O͘, or o͘, is one of the six Hokkien vowels as written in the Pe̍h-ōe-jī (POJ) orthography. It is pronounced , like the pronunciation of in "law". The orthography also uses diacritics to indicate tone, and the standard letter without a diacritic represents the vowel in the first or fourth tone (with the fourth tone used in syllables with a stop consonant, i.e. , , , , and the first tone used in other cases). The other possible tone categories require one of the following tonal symbols to be written above it: Ó͘ ó͘ (second tone) 《陰上／阴上》 Ò͘ ò͘ (third tone) 《陰去／阴去》 Ô͘ ô͘ (fifth tone) 《陽平／阳平》 Ǒ͘ ǒ͘ (sixth tone, used in Quanzhou-descended dialects) 《陽上／阳上》 Ō͘ ō͘ (seventh tone) 《陽去／阳去》 O̍͘ o̍͘ (eighth tone) 《陽入／阳入》 Ŏ͘ ŏ͘ / Ő͘ ő͘ (ninth tone, high rising in Taiwanese Hokkien)
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).