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Neptune in Irish (Neiptiún): Meaning, Pronunciation, Usage

‘Neiptiún’ also means: Neptune (God)

The Irish for Neptune is Neiptiún, a masculine noun.
Updated October 2026Report a mistake

How to say “Neptune” in Irish

Irish:
Neiptiún
English:
Neptune, Neptune (God)
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“nep-TYOON”  /nʲɛpʲˈtʲuːnʲ/
Various forms
Genitive singular:
Neiptiúin (e.g. gealacha Neiptiúin, the moons of Neptune)

What does “Neiptiún” mean?

“Neiptiún” has two alternative meanings. The most common comes first.

Neptune
Neptune, the eighth and farthest planet from the sun in our solar system.Also: planet Neptune, eighth planet.
1 other meaning: Neptune (God)
2Neptune (God)
Neptune, the Roman god of the sea.Also: Neptune, Roman sea God, God of the sea.

“Neiptiún” in a sentence: Irish examples

Common Irish sentences using Neiptiún, the Irish word for Neptune.

Is é Neiptiún an pláinéad is faide ón ngrian.
Neptune is the planet farthest from the sun.
Tá dath gorm ar Neiptiún.
Neptune is blue in colour.
Ní féidir Neiptiún a fheiceáil gan teileascóp.
You cannot see Neptune without a telescope.
Is gás-fhathach é Neiptiún.
Neptune is a gas giant.
Tá gaotha láidre ar dhromchla Neiptiúin.
There are strong winds on the surface of Neptune.
Thóg sé blianta fada ar an spásárthach Neiptiún a bhaint amach.
It took the spacecraft many years to reach Neptune.
Ba é Neiptiún dia na farraige ag na Rómhánaigh.
Neptune was the Romans' god of the sea.

Other nouns in Irish

More everyday Irish nouns to learn next.

Neptune in Irish: frequently asked questions

What is the Irish for Neptune?

The Irish for Neptune is Neiptiún (pronounced “nep-TYOON”). It’s a masculine noun. Depending on context it can also mean Neptune (God).

How do you pronounce Neiptiún in Irish?

Neiptiún is said like “nep-TYOON” (IPA /nʲɛpʲˈtʲuːnʲ/).

Does Neiptiún have a plural?

No. Neiptiún is a name, so it is used in the singular only.

Does Neiptiún have more than one meaning?

Yes. Neiptiún can mean Neptune or Neptune (God), depending on context; the first is the most common.

Does Neiptiún take the article like 'an ghrian'?

No, Neiptiún is a proper name and is used without the article: 'ar Neiptiún', 'gealaí Neiptiúin'.

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