The Definite Article in Welsh

Overview

Welsh has a definite article but no indefinite article, which is one of the first structural differences you will notice compared to English. At the A1 level, learning how the definite article works is essential because it appears constantly and interacts directly with the mutation system.

The definite article in Welsh has three forms — "y", "yr", and "'r" — and the choice depends on the surrounding sounds. Additionally, the article triggers soft mutation of feminine singular nouns, creating a direct link between articles, gender, and mutations that runs through the entire language.

The absence of an indefinite article means that a bare noun without "y/yr/'r" is understood as indefinite: "ci" means "a dog," while "y ci" means "the dog." This simplicity is good news for learners.

How It Works

Forms of the Article

Form	Used when	Example
y	before consonants	y ci (the dog)
yr	before vowels and "h"	yr ysgol (the school), yr haul (the sun)
'r	after a word ending in a vowel	mae'r plant (the children are)

Article and Mutations

The definite article triggers soft mutation of feminine singular nouns:

Unmutated	With article	Gender
cath	y gath	feminine
merch	y ferch	feminine
gardd	yr ardd	feminine (g disappears)
basged	y fasged	feminine
ci	y ci	masculine (no mutation)
tŷ	y tŷ	masculine (no mutation)

No Indefinite Article

Welsh	English
ci	a dog
cath	a cat
y ci	the dog
y gath	the cat

Examples in Context

Welsh	English	Note
y ci	the dog	Masculine, no mutation
yr ysgol	the school	Before vowel, uses "yr"
mae'r plant yn chwarae	the children are playing	After vowel, uses "'r"
y ferch	the girl	Feminine, soft mutation of "merch"
yr afon	the river	Feminine, before vowel
y tŷ mawr	the big house	Masculine, no mutation
y gath fach	the small cat	Feminine noun and adjective both mutate
Mae ci yn yr ardd.	A dog is in the garden.	No article = indefinite
Mae'r haul yn disgleirio.	The sun is shining.	"yr" before "h"
llyfr da	a good book	No indefinite article needed

Common Mistakes

Using "un" as an indefinite article

• Wrong: un ci (to mean "a dog")
• Right: ci (a dog)
• Why: "Un" means "one" in Welsh, not "a/an." Simply use the bare noun for indefinite reference.

Forgetting mutation with feminine nouns

• Wrong: y merch
• Right: y ferch
• Why: Feminine singular nouns undergo soft mutation after the definite article. This is one of the most frequent mutation contexts.

Using the wrong form of the article

• Wrong: mae y plant
• Right: mae'r plant
• Why: After a vowel, the article contracts to "'r." Using the full "y" sounds stilted.

Practice Tips

1. Gender-article drills: Take a list of common nouns, note their gender, and practice saying each with the article. Check whether mutation applies.

2. Read Welsh signs: Welsh is visible on signs throughout Wales. Notice how the article appears in place names and public notices. This gives you real-world exposure.

3. Spot the missing article: Compare Welsh and English sentences to train yourself to recognize when Welsh omits what English requires ("a/an") and vice versa.

Related Concepts

• Gender of Nouns