Gender of Nouns in Welsh

Overview

Every noun in Welsh is either masculine or feminine — there is no neuter gender. At the A1 level, understanding grammatical gender is crucial because it directly affects mutations after the definite article, adjective agreement, and pronoun choice.

Unlike languages where gender can often be predicted from word endings, Welsh gender must largely be learned with each noun. There are some tendencies — many abstract nouns and words ending in "-aeth" or "-es" tend to be feminine — but there are enough exceptions that memorizing gender alongside vocabulary is the safest approach.

The practical impact of gender is immediate: when you say "the cat" in Welsh, you must know that "cath" is feminine so you can apply the soft mutation and say "y gath" rather than incorrectly saying "y cath."

How It Works

Gender Effects

Context	Masculine	Feminine
After definite article	No mutation: y ci	Soft mutation: y gath
Adjective after noun	No mutation: ci mawr	Soft mutation: cath fawr
Pronoun reference	fe/fo (he)	hi (she)
"Un" (one)	No mutation: un ci	Soft mutation: un gath
Demonstrative "this"	hwn	hon

Gender Tendencies

Tend to be masculine	Tend to be feminine
Days of the week	Countries and rivers
Months	Languages
Most trees (as objects)	Abstract nouns in -aeth
Metals	Words ending in -es, -en

Common Nouns by Gender

Masculine	Feminine
ci (dog)	cath (cat)
tŷ (house)	ysgol (school)
bachgen (boy)	merch (girl)
llyfr (book)	afon (river)
car (car)	gardd (garden)
bwrdd (table)	cadair (chair)

Examples in Context

Welsh	English	Note
y bachgen (m)	the boy	No mutation
y ferch (f, soft mutation)	the girl	merch → ferch
y tŷ (m)	the house	No mutation
yr afon (f)	the river	No mutation needed (vowel)
ci mawr	a big dog	Masculine: adjective unmutated
cath fawr	a big cat	Feminine: adjective mutated (mawr → fawr)
y llyfr coch	the red book	Masculine
y gadair goch	the red chair	Feminine: both noun and adjective mutate
Mae e'n fawr. (m)	It is big.	Masculine pronoun
Mae hi'n fawr. (f)	It is big.	Feminine pronoun

Common Mistakes

Not mutating feminine nouns after the article

• Wrong: y cath
• Right: y gath
• Why: Feminine singular nouns always undergo soft mutation after the definite article.

Not mutating adjectives after feminine nouns

• Wrong: cath mawr
• Right: cath fawr
• Why: Adjectives following feminine singular nouns take soft mutation.

Guessing gender by meaning

• Wrong: Assuming "cadair" (chair) is masculine because chairs have no biological sex
• Right: Learning that "cadair" is feminine
• Why: Grammatical gender in Welsh is arbitrary for most nouns and must be memorized.

Using wrong pronoun for things

• Wrong: Mae'r gadair. Mae e'n goch. (using "e" for feminine noun)
• Right: Mae'r gadair. Mae hi'n goch.
• Why: Pronouns must match the grammatical gender of the noun they replace.

Practice Tips

1. Learn gender with every noun: When you learn a new word, always learn it with the article: "y ci" (m), "y gath" (f). This builds gender awareness from the start.

2. Use colour coding: In your vocabulary notebook, write masculine nouns in one colour and feminine in another. The visual distinction helps your memory.

3. Test yourself with adjectives: Take a noun and add the adjective "mawr" (big). If the noun is feminine, say "fawr." This reinforces both gender and mutation in one exercise.

Related Concepts

• The Definite Article
• Plural Formation
• Basic Adjectives
• Demonstratives