HeyRua Get the app

Philosophy in Irish (Fealsúnacht): Meaning, Pronunciation, Usage

The Irish for philosophy is fealsúnacht, a feminine noun (plural fealsúnachtaí).
Updated October 2026Report a mistake

How to say “philosophy” in Irish

Irish:
fealsúnacht
English:
philosophy
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“FAL-soo-nukht”  /ˈfʲal̪ˠsˠuːn̪ˠəxt̪ˠ/
Various forms
Plural:
fealsúnachtaí (philosophies)
Genitive singular:
fealsúnachta, na fealsúnachta (e.g. stair na fealsúnachta, the history of philosophy)
Genitive plural:
fealsúnachtaí, na bhfealsúnachtaí (e.g. comparáid na bhfealsúnachtaí, the comparison of the philosophies)

What does “fealsúnacht” mean?

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

philosophy
The study of the fundamental nature of knowledge, reality, existence and right conduct.Also: philosophical study, metaphysics.
1 other meaning:
2philosophy
A particular system of thought or a personal set of beliefs and principles that guide how someone lives or acts.Also: outlook, principle, worldview.

“Fealsúnacht” with the article

The plural of philosophy in Irish is fealsúnachtaí. Here is fealsúnacht after the article (an t-alt), in the singular and the plural.

an fhealsúnacht
the philosophy
Lenition: f becomes fh after an (feminine noun)
na fealsúnachtaí
the philosophies
Plural: no change after na

“Fealsúnacht” in a sentence: Irish examples

Common Irish sentences using fealsúnacht, the Irish word for philosophy.

Tá mé ag déanamh staidéir ar an bhfealsúnacht.
I'm studying philosophy.
Is léachtóir fealsúnachta í mo dheirfiúr.
My sister is a philosophy lecturer.
Sin í m'fhealsúnacht féin sa saol.
That's my own philosophy of life.
Bhí suim mhór aige i bhfealsúnacht na Gréige.
He had a great interest in Greek philosophy.
Tá fealsúnachtaí éagsúla san Oirthear.
There are various philosophies in the East.
Fuair sí céim san fhealsúnacht anuraidh.
She got a degree in philosophy last year.
Ní thuigim fealsúnacht an chomhlachta seo ar chor ar bith.
I don't understand this company's philosophy at all.

Other nouns in Irish

More everyday Irish nouns to learn next.

Philosophy in Irish: frequently asked questions

What is the Irish for philosophy?

The Irish for philosophy is fealsúnacht (pronounced “FAL-soo-nukht”). It’s a feminine noun and the plural is fealsúnachtaí.

How do you pronounce fealsúnacht in Irish?

Fealsúnacht is said like “FAL-soo-nukht” (IPA /ˈfʲal̪ˠsˠuːn̪ˠəxt̪ˠ/).

What is the plural of philosophy in Irish?

The plural of fealsúnacht is fealsúnachtaí; with the article, na fealsúnachtaí means “the philosophies”. The genitive plural is fealsúnachtaí, as in comparáid na bhfealsúnachtaí (the comparison of the philosophies).

Why does fealsúnacht change to fhealsúnacht or bhfealsúnacht?

Irish changes the start of some words after certain words. After mo (my) fealsúnacht becomes m'fhealsúnacht (lenition), and after ár (our) or i (in) it becomes ár bhfealsúnacht (eclipsis).

What is the Irish for a philosopher?

A philosopher is 'fealsamh', and the subject is 'fealsúnacht'. The adjective 'philosophical' is 'fealsúnach'.

Learn Irish by
actually speaking it

Learn everyday Irish words like fealsúnacht through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen