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Badness in Irish (Olcas): Meaning, Pronunciation, Usage

‘olcas’ also means: evil · anger

The Irish for badness is olcas, a masculine noun.
Updated October 2026Report a mistake

How to say “badness” in Irish

Irish:
olcas
English:
badness, evil, anger
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“UL-kus”  /ˈɔlˠkəsˠ/
Various forms
Genitive singular:
olcais, an olcais (e.g. méid an olcais, the extent of the evil)

What does “olcas” mean?

“Olcas” has three alternative meanings. The most common comes first.

badness
The quality of being bad or poor in condition; used especially in phrases like 'ag dul in olcas', getting worse.Also: worsening, deterioration, worse.
2 other meanings: evil or anger
2evil
Wickedness or malice in a person or deed.Also: wickedness, malice, spite.
3anger
Bad temper or annoyance, as in 'olcas a chur ar dhuine', to make someone angry.Also: bad temper, annoyance.

Other Irish words for badness: donacht (badness)

“Olcas” with the article

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

an t-olcas
the badness
Masculine nouns take t before a vowel after an

“Olcas” in a sentence: Irish examples

Common Irish sentences using olcas, the Irish word for badness.

Tá an aimsir ag dul in olcas.
The weather is getting worse.
Níor thuig mé olcas an scéil go dtí inné.
I didn't understand how bad things were until yesterday.
Ní raibh olcas ar bith ann.
There was no badness in him.
Dá olcas an lá, chuamar amach.
However bad the day was, we went out.
Bhí iontas orm faoi olcas an bhóthair.
I was surprised at how bad the road was.
Rinne sé é le holcas.
He did it out of spite.
Tá a shláinte ag dul in olcas le tamall.
His health has been getting worse for a while.

Other nouns in Irish

More everyday Irish nouns to learn next.

Badness in Irish: frequently asked questions

What is the Irish for badness?

The Irish for badness is olcas (pronounced “UL-kus”). It’s a masculine noun. Depending on context it can also mean evil or anger.

How do you pronounce olcas in Irish?

Olcas is said like “UL-kus” (IPA /ˈɔlˠkəsˠ/).

Does olcas have a plural?

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

Does olcas have more than one meaning?

Yes. Olcas can mean badness, evil or anger, depending on context; the first is the most common.

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

Irish nouns beginning with a vowel take a prefix after certain words: an t-olcas (the badness), a holcas (her badness), a n-olcas (their badness).

How do I say something is getting worse or better?

Use 'ag dul in olcas' for getting worse and its opposite 'ag dul i bhfeabhas' for getting better.

What is the difference between 'olc' and 'olcas'?

'Olc' is the adjective 'bad' and also a noun meaning 'evil'; 'olcas' is the abstract noun 'badness', used in phrases like 'dá olcas é', however bad it is.

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