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Disease in Irish (Aicíd): Meaning, Pronunciation, Usage

‘aicíd’ also means: species (eucharistic)

The Irish for disease is aicíd, a feminine noun (plural aicídí).
Updated October 2026Report a mistake

How to say “disease” in Irish

Irish:
aicíd
English:
disease, species (eucharistic)
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“AK-eedj”  /ˈakʲiːdʲ/
Various forms
Plural:
aicídí (diseases)
Genitive singular:
aicíde, na haicíde (e.g. leathadh na haicíde, the spread of the disease)
Genitive plural:
aicídí, na n-aicídí (e.g. cosc na n-aicídí, the prevention of the diseases)

What does “aicíd” mean?

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

disease
An illness or sickness, especially an infectious or epidemic one affecting people, animals or plants.Also: illness, sickness, ailment, pestilence.
1 other meaning: species (eucharistic)
2species (eucharistic)
In Catholic theology, the outward appearance of bread or wine in the Eucharist after consecration.Also: species, eucharistic species, accident.

Other Irish words for disease: galar (disease)

“Aicíd” with the article

The plural of disease in Irish is aicídí. Here is aicíd after the article (an t-alt), in the singular and the plural.

an aicíd
the disease
No change: feminine nouns starting with a vowel keep their form after an
na haicídí
the diseases
Plural: na adds h before a vowel

“Aicíd” in a sentence: Irish examples

Common Irish sentences using aicíd, the Irish word for disease.

Is aicíd thógálach í an bhruitíneach.
Measles is an infectious disease.
Bhuail aicíd na prátaí an bhliain sin.
Disease struck the potatoes that year.
Tá leigheas ar an aicíd sin anois.
There is a cure for that disease now.
Tháinig siad slán ón aicíd.
They survived the disease.
Scaipeann go leor aicídí trí uisce salach.
Many diseases spread through dirty water.
Rinne na dochtúirí staidéar ar chúis na haicíde.
The doctors studied the cause of the disease.
Bíonn aicídí áirithe coitianta i measc beithíoch.
Certain diseases are common among cattle.

Other nouns in Irish

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Disease in Irish: frequently asked questions

What is the Irish for disease?

The Irish for disease is aicíd (pronounced “AK-eedj”). It’s a feminine noun and the plural is aicídí. Depending on context it can also mean species (eucharistic).

How do you pronounce aicíd in Irish?

Aicíd is said like “AK-eedj” (IPA /ˈakʲiːdʲ/).

What is the plural of disease in Irish?

The plural of aicíd is aicídí; with the article, na haicídí means “the diseases”. The genitive plural is aicídí, as in cosc na n-aicídí (the prevention of the diseases).

Does aicíd have more than one meaning?

Yes. Aicíd can mean disease or species (eucharistic), depending on context; the first is the most common.

Why does aicíd sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an aicíd (the disease), a haicíd (her disease), a n-aicíd (their disease), na haicídí (the diseases).

What is the difference between aicíd and galar?

Both mean disease; galar is the more general everyday word, while aicíd often suggests an infectious or epidemic disease, as in aicíd thógálach.

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