Irish Gaelic:
* Fionn (fʲɔnˠ): The "F" is pronounced like the "f" in "fin" or "fine". The "i" is a long, thin "ee" sound, similar to the "ee" in "see". The "onn" is a nasalized "on" sound, where the air comes out of your nose.
Scottish Gaelic:
* Fionn (fjuːn): The "F" is pronounced like the "f" in "fin" or "fine". The "io" is a diphthong, a combination of a long "ee" sound and a short "oo" sound, similar to the "you" in "flute". The "nn" is pronounced as a single "n" sound.
Note: In both dialects, the emphasis is on the first syllable, "Fi".
Remember: The actual pronunciation can vary slightly depending on the speaker and their specific dialect.