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Tongue-twister in Irish (Casfhocal): Meaning, Pronunciation, Usage

The Irish for tongue-twister is casfhocal, a masculine noun (plural casfhocail).
Updated October 2026Report a mistake

How to say “tongue-twister” in Irish

Irish:
casfhocal
English:
tongue-twister
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“KOSS-ok-ul”  /ˈkasˌokəl/
Various forms
Plural:
casfhocail (tongue-twisters)
Genitive singular:
casfhocail, an chasfhocail (e.g. deireadh an chasfhocail, the end of the tongue-twister)
Genitive plural:
casfhocal, na gcasfhocal (e.g. leabhar na gcasfhocal, the book of tongue-twisters)

What does “casfhocal” mean?

tongue-twister
A phrase or sentence that is hard to say quickly because of its similar sounds.Also: tongue twister, difficult phrase.

“Casfhocal” with the article

The plural of tongue-twister in Irish is casfhocail. Here is casfhocal after the article (an t-alt), in the singular and the plural.

an casfhocal
the tongue-twister
No change after an
na casfhocail
the tongue-twisters
Plural: no change after na

“Casfhocal” in a sentence: Irish examples

Common Irish sentences using casfhocal, the Irish word for tongue-twister.

Abair an casfhocal sin go tapa.
Say that tongue-twister quickly.
Is casfhocal deacair é sin.
That's a hard tongue-twister.
Bhain na páistí taitneamh as na casfhocail.
The children enjoyed the tongue-twisters.
Níl mé in ann mo chasfhocal féin a rá.
I can't say my own tongue-twister.
Rinne mé botún i lár an chasfhocail.
I made a mistake in the middle of the tongue-twister.
Mhúin an múinteoir casfhocail nua dúinn inniu.
The teacher taught us new tongue-twisters today.
Tá cúpla casfhocal Gaeilge ar eolas agam.
I know a few Irish tongue-twisters.

Other nouns in Irish

More everyday Irish nouns to learn next.

Tongue-twister in Irish: frequently asked questions

What is the Irish for tongue-twister?

The Irish for tongue-twister is casfhocal (pronounced “KOSS-ok-ul”). It’s a masculine noun and the plural is casfhocail.

How do you pronounce casfhocal in Irish?

Casfhocal is said like “KOSS-ok-ul” (IPA /ˈkasˌokəl/).

What is the plural of tongue-twister in Irish?

The plural of casfhocal is casfhocail; with the article, na casfhocail means “the tongue-twisters”. The genitive plural is casfhocal, as in leabhar na gcasfhocal (the book of tongue-twisters).

Why does casfhocal change to chasfhocal or gcasfhocal?

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

Is 'casfhocal' related to 'seanfhocal'?

Both are built on 'focal' (word): 'casfhocal' is a twisted word, a tongue-twister, while 'seanfhocal' is an old word, a proverb.

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