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Filthy in Irish (cáidheach): Meaning, Forms, Examples

Other uses of ‘cáidheach’: obscene · nasty

The Irish for filthy is cáidheach: urlár cáidheach, a filthy floor.
Updated October 2026Report a mistake

How to say “filthy” in Irish

Irish:
cáidheach
English:
filthy, obscene, nasty
Word type:
adjective
Filthier:
níos cáidhí
Filthiest:
is cáidhí
Plural:
cáidheacha
Pronunciation:
“KAW-yukh”  /ˈkaːjəx/

What does “cáidheach” mean?

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

filthy
Very dirty, covered in filth or muck.Also: dirty, mucky, foul.
2 other meanings: obscene or nasty
2obscene
Dirty in the sense of rude or offensive, as in talk.Also: dirty, smutty, foul.
3nasty
Used of weather that is wet, sleety and unpleasant.Also: dirty, foul, sleety.

Other Irish adjectives for filthy: salach (dirty)

“Cáidheach” after a noun

An Irish adjective comes after its noun. Here is cáidheach after urlár (floor, masculine), after lámh (hand, feminine) and after a plural.

after a masculine nounurlár cáidheacha filthy floor
after a feminine nounlámh cháidheacha filthy hand
after a plural nounurláir cháidheachafilthy floors

séimhiú (the h) the ending

feminine
lámhhand
+
cáidheachfilthy
=
lámh cháidheacha filthy hand

After a feminine noun the adjective gets a séimhiú, an h after its first letter: lámh cháidheach. After a masculine noun it stays as it is: urlár cáidheach.

plural
urláirfloors
+
cáidheachafilthy, plural
=
urláir cháidheachafilthy floors

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

Filthier, filthiest, very filthy

níosmore
+
cáidhífilthy
=
níos cáidhífilthier
ismost
+
cáidhífilthy
=
is cáidhífilthiest

Tá an tsráid seo níos cáidhí ná an ceann eile. This street is filthier than the other one.

filthierníos cáidhíin the past tense: ní ba cháidhí
filthiestis cáidhíin the past tense: ba cháidhí
as filthy aschomh cáidheach leno change after chomh
very filthyan-cháidheachan- lenites, except d, t and s
too filthyrócháidheachró- lenites

“Cáidheach” in a sentence: Irish examples

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

Bhí urlár na cistine cáidheach.
The kitchen floor was filthy.
Nigh sé a lámh cháidheach faoin sconna.
He washed his filthy hand under the tap.
Caith na héadaí cáidheacha sa mheaisín níocháin.
Throw the filthy clothes in the washing machine.
Tá an tsráid seo níos cáidhí ná an ceann eile.
This street is filthier than the other one.
Tá do bhróga cáidheach ar fad.
Your shoes are completely filthy.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Filthy in Irish: frequently asked questions

What is the Irish for filthy?

The Irish for filthy is cáidheach (pronounced “KAW-yukh”). It comes after the noun: urlár cáidheach, a filthy floor; lámh cháidheach, a filthy hand.

How do you say filthier and filthiest in Irish?

níos cáidhí is filthier and is cáidhí is filthiest. In the past tense they become ní ba cháidhí and ba cháidhí.

Why does cáidheach become cháidheach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So lámh cháidheach (a filthy hand) but urlár cáidheach (a filthy floor), because urlár is masculine.

What is the plural of cáidheach?

With a plural noun cáidheach becomes cáidheacha: urláir cháidheacha, lámha cáidheacha. After a plural that ends in a slender consonant it is lenited as well.

How do you say very filthy in Irish?

an-cháidheach. Too filthy is rócháidheach, and as filthy as is chomh cáidheach le.

Does cáidheach have more than one meaning?

Yes. Cáidheach can mean filthy, obscene or nasty, depending on context; the first is the most common.

What is the difference between cáidheach and salach?

Salach is the everyday word for dirty, while cáidheach is stronger, meaning filthy or disgusting, and can also describe foul talk or weather.

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