Ó

Etymology

 * See.

Usage notes

 * In the German-based alphabet, this vowel is represented by (see there). The spelling is thus defective and does not reflect the difference between  and.

Etymology 1
See.

Usage notes

 * Forms with the definite article are not found.
 * The form Ó triggers of a following vowel.
 * The form Uí triggers of a following consonant.
 * The form Uíbh triggers lenition of a following sound.

Declension
Declension of Ó

Irregular

Usage notes
As the letter $⟨O⟩$ is never the first letter of a word, the upper case form appears only when a word is written in ALL CAPS.

Pronunciation

 * The syllable with this letter is always stressed.

Letter

 * 1) the letter O with an acute accent