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Good custom in Irish (Dea-nós): Meaning, Pronunciation, Usage

‘dea-nós’ also means: good manners

The Irish for good custom is dea-nós, a masculine noun (plural dea-nósanna).
Updated October 2026Report a mistake

How to say “good custom” in Irish

Irish:
dea-nós
English:
good custom, good manners
Word type:
noun
Gender:
masculine
Pronunciation:
“dya-NOHS”  /ˈdʲa ˌn̪ˠoːsˠ/
Various forms
Plural:
dea-nósanna (good customs)
Genitive singular:
dea-nóis, an dea-nóis (e.g. buntáistí an dea-nóis, the advantages of the good custom)
Genitive plural:
dea-nósanna, na ndea-nósanna (e.g. cleachtadh na ndea-nósanna, the practice of good customs)

What does “dea-nós” mean?

“Dea-nós” has two alternative meanings. The most common comes first.

good custom
A good habit, practice or tradition that people follow.Also: good habit, good practice, good tradition.
1 other meaning: good manners
2good manners
Polite, proper behaviour; good form.Also: politeness, good form, etiquette.

“Dea-nós” with the article

The plural of good custom in Irish is dea-nósanna. Here is dea-nós after the article (an t-alt), in the singular and the plural.

an dea-nós
the good custom
No change after an
na dea-nósanna
the good customs
Plural: no change after na

“Dea-nós” in a sentence: Irish examples

Common Irish sentences using dea-nós, the Irish word for good custom.

Is dea-nós í an léitheoireacht gach oíche.
Reading every night is a good habit.
Ba cheart an dea-nós sin a choinneáil.
That good custom should be kept up.
Mhúin mo mháthair dea-nósanna dúinn.
My mother taught us good habits.
Tá dea-nósanna ag na páistí sin.
Those children have good habits.

Other nouns in Irish

More everyday Irish nouns to learn next.

Good custom in Irish: frequently asked questions

What is the Irish for good custom?

The Irish for good custom is dea-nós (pronounced “dya-NOHS”). It’s a masculine noun and the plural is dea-nósanna. Depending on context it can also mean good manners.

How do you pronounce dea-nós in Irish?

Dea-nós is said like “dya-NOHS” (IPA /ˈdʲa ˌn̪ˠoːsˠ/).

What is the plural of good custom in Irish?

The plural of dea-nós is dea-nósanna; with the article, na dea-nósanna means “the good customs”. The genitive plural is dea-nósanna, as in cleachtadh na ndea-nósanna (the practice of good customs).

Does dea-nós have more than one meaning?

Yes. Dea-nós can mean good custom or good manners, depending on context; the first is the most common.

Why does dea-nós change to dhea-nós or ndea-nós?

Irish changes the start of some words after certain words. After mo (my) dea-nós becomes mo dhea-nós (lenition), and after ár (our) or i (in) it becomes ár ndea-nós (eclipsis).

What is the opposite of 'dea-nós'?

The opposite is 'drochnós', a bad habit or bad custom.

Is 'dea-nós' the same as 'béasa'?

'Béasa' is the usual word for manners; 'dea-nós' stresses a good custom or practice, though it can also mean good manners.

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