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Smallpox in Irish (Bolgach): Meaning, Pronunciation, Usage

‘bolgach’ also means: pox

The Irish for smallpox is bolgach, a feminine noun.
Updated October 2026Report a mistake

How to say “smallpox” in Irish

Irish:
bolgach
English:
smallpox, pox
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“BOL-ug-ukh”  /ˈbˠɔlˠəɡəx/
Various forms
Genitive singular:
bolgaí, na bolgaí (e.g. vacsaín na bolgaí, the smallpox vaccine)

What does “bolgach” mean?

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

smallpox
A serious infectious disease that causes fever and pus-filled blisters on the skin.Also: variola, pox.
1 other meaning: pox
2pox
Any disease that brings out blisters or pustules on the skin, as in an bholgach Fhrancach (syphilis).Also: pock disease, pustular disease.

“Bolgach” with the article

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

an bholgach
the smallpox
Lenition: b becomes bh after an (feminine noun)

“Bolgach” in a sentence: Irish examples

Common Irish sentences using bolgach, the Irish word for smallpox.

Bhí an bholgach go forleathan in Éirinn fadó.
Smallpox was widespread in Ireland long ago.
Fuair go leor daoine bás den bholgach.
Many people died of smallpox.
Tá deireadh leis an mbolgach anois ar fud an domhain.
Smallpox has now been wiped out around the world.
Fágann an bholgach colm ar an gcraiceann.
Smallpox leaves scars on the skin.
Bhí ráig bolgaí sa bhaile sin.
There was an outbreak of smallpox in that town.
Is galar tógálach í an bholgach.
Smallpox is an infectious disease.
Cuireadh an vacsaín in aghaidh na bolgaí ar fáil.
The vaccine against smallpox was made available.

Other nouns in Irish

More everyday Irish nouns to learn next.

Smallpox in Irish: frequently asked questions

What is the Irish for smallpox?

The Irish for smallpox is bolgach (pronounced “BOL-ug-ukh”). It’s a feminine noun. Depending on context it can also mean pox.

How do you pronounce bolgach in Irish?

Bolgach is said like “BOL-ug-ukh” (IPA /ˈbˠɔlˠəɡəx/).

Does bolgach have a plural?

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

Does bolgach have more than one meaning?

Yes. Bolgach can mean smallpox or pox, depending on context; the first is the most common.

Why does bolgach change to bholgach or mbolgach?

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

What is the Irish for chickenpox, and is it the same as 'bolgach'?

No: chickenpox is 'deilgneach', while 'an bholgach' is smallpox. Older speakers sometimes used 'bolgach' loosely for pox diseases.

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