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Sinful in Irish (peacúil): Meaning, Forms, Examples

Other uses of ‘peacúil’: decadent

The Irish for sinful is peacúil: saol peacúil, a sinful life.
Updated October 2026Report a mistake

How to say “sinful” in Irish

Irish:
peacúil
English:
sinful, decadent
Word type:
adjective
More sinful:
níos peacúla
Most sinful:
is peacúla
Plural:
peacúla
Pronunciation:
“PAK-ool”  /ˈpʲakuːlʲ/

What does “peacúil” mean?

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

sinful
Wrong in a moral or religious sense, involving sin.Also: wicked, immoral, iniquitous.
1 other meaning: decadent
2decadent
So pleasant or indulgent that it feels a little wrong, used humorously of food and treats.Also: indulgent, naughty, wicked.

“Peacúil” after a noun

An Irish adjective comes after its noun. Here is peacúil after saol (life, masculine), after bean (woman, feminine) and after a plural.

after a masculine nounsaol peacúila sinful life
after a feminine nounbean pheacúila sinful woman
after a plural nounsaolta peacúlasinful lives

séimhiú (the h) the ending

feminine
beanwoman
+
peacúilsinful
=
bean pheacúila sinful woman

After a feminine noun the adjective gets a séimhiú, an h after its first letter: bean pheacúil. After a masculine noun it stays as it is: saol peacúil.

plural
saoltalives
+
peacúlasinful, plural
=
saolta peacúlasinful lives

With a plural noun the adjective takes its plural form, peacúla. It also gets an h after a plural that ends in a slender consonant; after other plurals it does not: mná peacúla.

More sinful, most sinful, very sinful

níosmore
+
peacúlasinful
=
níos peacúlamore sinful
ismost
+
peacúlasinful
=
is peacúlamost sinful

Tá an mhilseog seo níos peacúla ná an ceann eile. This dessert is more decadent than the other one.

more sinfulníos peacúlain the past tense: ní ba pheacúla
most sinfulis peacúlain the past tense: ba pheacúla
as sinful aschomh peacúil leno change after chomh
very sinfulan-pheacúilan- lenites, except d, t and s
too sinfulrópheacúilró- lenites

“Peacúil” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Bhí saol peacúil aige nuair a bhí sé óg.
He led a sinful life when he was young.
Is cáca milis an-pheacúil é an toirtín seo.
This tart is a very decadent sweet cake.
Rinne siad gníomhartha peacúla.
They committed sinful acts.
Tá an mhilseog seo níos peacúla ná an ceann eile.
This dessert is more decadent than the other one.
Dar leis an sagart, tá an nós sin peacúil.
According to the priest, that custom is sinful.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Sinful in Irish: frequently asked questions

What is the Irish for sinful?

The Irish for sinful is peacúil (pronounced “PAK-ool”). It comes after the noun: saol peacúil, a sinful life; bean pheacúil, a sinful woman.

How do you say more sinful and most sinful in Irish?

níos peacúla is more sinful and is peacúla is most sinful. In the past tense they become ní ba pheacúla and ba pheacúla.

Why does peacúil become pheacúil?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So bean pheacúil (a sinful woman) but saol peacúil (a sinful life), because saol is masculine.

What is the plural of peacúil?

With a plural noun peacúil becomes peacúla: saolta peacúla, mná peacúla.

How do you say very sinful in Irish?

an-pheacúil. Too sinful is rópheacúil, and as sinful as is chomh peacúil le.

Does peacúil have more than one meaning?

Yes. Peacúil can mean sinful or decadent, depending on context; the first is the most common.

Which noun is 'peacúil' related to?

It comes from 'peaca', meaning a sin, so 'peacúil' means full of sin or sinful, and 'peacach' is a sinner.

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