Ó

In some cases, the letter "ó" is used in some languages as in a high rising tone (e.g. Vietnamese).

It is sometimes also used in English for loanwords to represent a closed mid-front unrounded vowel.

Ó is the 21st letter of Dobrujan Tatar alphabet, represents the mid rounded half-advanced ATR or soft vowel /ɵ/ as in "tór" [t̶ɵr̶] 'background' In Dutch, the acute Ó accent is used to mark different meanings for words, for example voor and vóór ("for" / "before"), or vóórkomen and voorkómen ("to occur" / "to prevent").

Ó is widely used in Irish where it has various meanings: In Italian, ó is an optional symbol (especially used in dictionaries) sometimes used to indicate that a stressed o should be pronounced with a close sound: córso [ˈkorso], "course", as opposed to còrso [ˈkɔrso], "Corsican" (but both are commonly written with no accent marks when the context is clear).

It was proposed in 2018 that Ó should be one of their Latin alphabet to replace Ө and represents /œ/ (or /ʷœ/).

Ó is used in the Spanish language to denote an 'o' vowel with abnormal stress.