HeyRua Get the app

Reflex in Irish (Frithluail): Meaning, Pronunciation, Usage

The Irish for reflex is frithluail, a feminine noun (plural frithluailí).
Updated October 2026Report a mistake

How to say “reflex” in Irish

Irish:
frithluail
English:
reflex
Word type:
noun
Gender:
feminine
Pronunciation:
“FRIH-loo-il”  /ˈfʲɾʲɪhl̪ˠuəlʲ/
Various forms
Plural:
frithluailí (reflexes)
Genitive singular:
frithluaile, na frithluaile (e.g. tástáil frithluaile, a reflex test)
Genitive plural:
frithluailí, na bhfrithluailí (e.g. tástáil na bhfrithluailí, the testing of the reflexes)

What does “frithluail” mean?

reflex
An automatic movement or reaction of the body that happens without conscious thought.Also: reflex action, reaction, automatic response.

“Frithluail” with the article

The plural of reflex in Irish is frithluailí. Here is frithluail after the article (an t-alt), in the singular and the plural.

an fhrithluail
the reflex
Lenition: f becomes fh after an (feminine noun)
na frithluailí
the reflexes
Plural: no change after na

“Frithluail” in a sentence: Irish examples

Common Irish sentences using frithluail, the Irish word for reflex.

Is frithluail é caochadh na súl.
Blinking is a reflex.
Bhuail an dochtúir a ghlúin chun an fhrithluail a thástáil.
The doctor tapped his knee to test the reflex.
Tá frithluailí an-tapa ag an imreoir sin.
That player has very quick reflexes.
Rinne sí é le frithluail, gan smaoineamh.
She did it by reflex, without thinking.
Bhí a chuid frithluailí lag tar éis na timpiste.
His reflexes were weak after the accident.
Is gníomh frithluaile é an sraoth.
Sneezing is a reflex action.
Foghlaimíonn na mic léinn faoi fhrithluailí sa rang bitheolaíochta.
The students learn about reflexes in biology class.

Other nouns in Irish

More everyday Irish nouns to learn next.

Reflex in Irish: frequently asked questions

What is the Irish for reflex?

The Irish for reflex is frithluail (pronounced “FRIH-loo-il”). It’s a feminine noun and the plural is frithluailí.

How do you pronounce frithluail in Irish?

Frithluail is said like “FRIH-loo-il” (IPA /ˈfʲɾʲɪhl̪ˠuəlʲ/).

What is the plural of reflex in Irish?

The plural of frithluail is frithluailí; with the article, na frithluailí means “the reflexes”. The genitive plural is frithluailí, as in tástáil na bhfrithluailí (the testing of the reflexes).

Why does frithluail change to fhrithluail or bhfrithluail?

Irish changes the start of some words after certain words. After mo (my) frithluail becomes mo fhrithluail (lenition), and after ár (our) or i (in) it becomes ár bhfrithluail (eclipsis).

How is 'frithluail' different from 'frithghníomh'?

'Frithluail' is a bodily reflex, an automatic movement, while 'frithghníomh' is a reaction in a general or scientific sense, such as a chemical reaction.

Learn Irish by
actually speaking it

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

7-day free trial. Cancel anytime.

The HeyRua app home screen