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Signalling in Irish (Comharthú): Meaning, Pronunciation, Usage

‘comharthú’ also means: signposting

The Irish for signalling is comharthú, a masculine noun. Ag comharthú is signalling, from the verb comharthaigh.
Updated October 2026Report a mistake

How to say “signalling” in Irish

Irish:
comharthú
English:
signalling, signposting
Word type:
noun (verbal noun)
Verbal noun of:
comharthaigh, to signal (ag comharthú, signalling)
Gender:
masculine
Pronunciation:
“KOH-ruh-hoo”  /ˈkoːɾˠhuː/
Various forms
Genitive singular:
comharthaithe, an chomharthaithe (e.g. córas comharthaithe, signalling system)

What does “comharthú” mean?

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

signalling
The act of giving a sign or signal; it is the verbal noun of the verb comharthaigh (signal, indicate).Also: signaling, indicating, marking.
1 other meaning: signposting
2signposting
The marking of a place or route with signs.Also: marking with signs, signage.

“Comharthú” as a verbal noun

After ag, comharthú means signalling: it is the verbal noun of the verb comharthaigh (to signal). A noun that follows it goes into the genitive.

agat
+
comharthúverbal noun
=
ag comharthúsignalling

“Comharthú” with the article

Here is comharthú after the article (an t-alt).

an comharthú
the signalling
No change after an

“Comharthú” in a sentence: Irish examples

Common Irish sentences using comharthú, the Irish word for signalling.

Tá comharthú maith ar an mbóthar nua.
The new road is well signposted.
Theip ar an gcomharthú ag an stáisiún.
The signalling failed at the station.
Rinneadh obair chomharthaithe ar an líne iarnróid.
Signalling work was done on the railway line.
Tá an comharthú as Gaeilge agus as Béarla.
The signage is in Irish and English.
Bhí fadhb le córas comharthaithe na traenach.
There was a problem with the train's signalling system.
Is tábhachtach comharthú soiléir i gcás éigeandála.
Clear signalling is important in an emergency.
Tá athrú le teacht ar an gcomharthú sa cheantar.
The signposting in the area is going to change.

Other nouns in Irish

More everyday Irish nouns to learn next.

Signalling in Irish: frequently asked questions

What is the Irish for signalling?

The Irish for signalling is comharthú (pronounced “KOH-ruh-hoo”). It’s a masculine noun. Depending on context it can also mean signposting.

How do you pronounce comharthú in Irish?

Comharthú is said like “KOH-ruh-hoo” (IPA /ˈkoːɾˠhuː/).

Does comharthú have a plural?

No plural form is given for comharthú in the standard. Many abstract and mass nouns in Irish have no plural.

Does comharthú have more than one meaning?

Yes. Comharthú can mean signalling or signposting, depending on context; the first is the most common.

Why does comharthú change to chomharthú or gcomharthú?

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

How is comharthú different from comhartha?

Comhartha is a sign or signal itself, while comharthú is the act of signalling or putting up signs.

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