Family and Relationships Vocabulary | Icelandic Grammar

Family vocabulary comes with three things English speakers have to adjust to. First, the everyday words for "mum" and "dad" are mamma and pabbi — móðir and faðir exist but are formal. Second, Icelandic has a single neuter word, systkini, for "siblings," with no one-word English equivalent. Third, you state relationships with eiga ("to own/have") plus the accusative (Ég á einn bróður), and the possessive comes after the noun (konan mín = my wife, literally "the-wife mine"). Each noun below is tagged for gender (kk = masculine, kvk = feminine, hk = neuter).

The core kinship words

Icelandic	Gender	English
mamma	kvk	mum (everyday)
pabbi	kk	dad (everyday)
móðir	kvk	mother (formal)
faðir	kk	father (formal)
foreldrar	kk pl	parents
barn	hk	child
sonur	kk	son
dóttir	kvk	daughter
bróðir	kk	brother
systir	kvk	sister
systkini	hk	siblings (collective)

Icelandic	Gender	English
afi	kk	grandpa
amma	kvk	grandma
frændi	kk	uncle / male cousin / nephew
frænka	kvk	aunt / female cousin / niece
maki	kk	spouse / partner
kærasti	kk	boyfriend
kærasta	kvk	girlfriend
vinur	kk	friend (male)
vinkona	kvk	friend (female)

Two words pull double duty. Frændi (kk) and frænka (kvk) cover any male/female relative outside the core — uncle, cousin, nephew all map to frændi, and aunt, cousin, niece all map to frænka. Icelandic doesn't split them by relationship the way English does; context tells you which.

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Use mamma and pabbi in normal speech. Móðir and faðir are formal — official forms, ceremonies, elevated writing. Saying "móðir mín" in casual chat sounds stiff.

Mamma og pabbi búa enn á Akureyri.

Mum and dad still live in Akureyri. 'mamma' (kvk) and 'pabbi' (kk) are the default everyday words.

Frændi minn í Kanada talar enga íslensku.

My cousin in Canada doesn't speak any Icelandic. 'frændi' (kk) covers cousin, uncle and nephew alike.

"Systkini" — siblings as one neuter word

Systkini (hk) means "siblings" — a single collective noun where English needs "brothers and sisters." It is neuter and grammatically plural, so it pairs with neuter plural numbers and adjectives: tvö systkini (two siblings), not tveir.

Ég á þrjú systkini: tvær systur og einn bróður.

I have three siblings: two sisters and one brother. 'systkini' (hk) is the collective; the neuter number is 'þrjú'.

Eruð þið systkini?

Are you siblings? One word does the work of 'brothers and/or sisters'.

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Systkini (hk) is a neuter collective with no single English word. Because it's neuter plural, it takes neuter plural numbers: tvö systkini, þrjú systkini — not tveir/þrír.

Saying what family you have: "eiga" + accusative

To say "I have a brother," Icelandic uses eiga (to own/have) — not the verb hafa. And the relative goes into the accusative, which changes the ending. This is where kinship words show their irregular shapes:

Nominative	Accusative (after Ég á …)	English
bróðir	bróður	(a) brother
systir	systur	(a) sister
sonur	son	(a) son
dóttir	dóttur	(a) daughter
barn	barn	(a) child

The number word agrees in gender too: einn bróður (masculine), eina systur (feminine), eitt barn (neuter).

Ég á einn bróður og eina systur.

I have one brother and one sister. 'eiga' + accusative: bróður (m. acc.), systur (f. acc.); the number agrees — einn / eina.

Þau eiga tvö börn, strák og stelpu.

They have two children, a boy and a girl. 'eiga' again; 'börn' is the plural of barn (hk).

Áttu systkini?

Do you have any siblings? 'Áttu' = á + þú, the everyday way to ask. 'eiga', not 'hafa'.

"This is my …": the post-nominal possessive

To say "my wife," "my boyfriend," Icelandic puts the possessive after the noun, and the noun takes its definite (suffixed) form. So "my wife" is konan mín — literally "the-wife mine." The possessive agrees with the noun's gender: minn (kk), mín (kvk), mitt (hk).

Noun (gender)	possessive	English
maðurinn (kk)	maðurinn minn	my husband
konan (kvk)	konan mín	my wife
barnið (hk)	barnið mitt	my child
kærastinn (kk)	kærastinn minn	my boyfriend

Þetta er konan mín, Guðrún.

This is my wife, Guðrún. Possessive AFTER the noun, and the noun is definite: 'konan mín'.

Kærastinn minn er frá Ísafirði.

My boyfriend is from Ísafjörður. 'kærastinn minn' — definite noun + post-nominal 'minn' (kk).

Amma mín bakar bestu pönnukökurnar.

My grandma makes the best pancakes. 'amma mín' — feminine, so 'mín'.

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Possessives come after the noun, and the noun is in its definite form: konan mín (my wife), kærastinn minn (my boyfriend). Agreement: minn (kk), mín (kvk), mitt (hk).

Common Mistakes

❌ Ég hef einn bróður.

Incorrect — 'hafa' is not used for having relatives. Use 'eiga'.

✅ Ég á einn bróður.

I have one brother. 'eiga' + accusative.

❌ mín kona

Incorrect — possessive placed before the noun, English-style.

✅ konan mín

My wife. Possessive after the definite noun.

❌ Ég á tveir systur.

Incorrect — number not agreeing, and the noun not in the accusative.

✅ Ég á tvær systur.

I have two sisters. 'tvær' (f.) + accusative plural 'systur'.

❌ Ég á tvær systkini.

Incorrect — 'systkini' is neuter, so the number must be neuter, not feminine.

✅ Ég á tvö systkini.

I have two siblings. Neuter 'systkini' takes the neuter number 'tvö'.

❌ Móðir mín eldar kvöldmat.

Stilted in casual speech — 'móðir' is formal. Fine in writing, odd in chat.

✅ Mamma eldar kvöldmat.

Mum is cooking dinner. Everyday speech uses 'mamma'.

Key Takeaways

mamma / pabbi are the everyday words; móðir / faðir are formal. Tag every noun's gender — it's unpredictable (foreldrar is masculine plural, barn is neuter).
systkini (hk) is a neuter collective for "siblings" — takes neuter numbers: tvö systkini.
State family with eiga + accusative, never hafa: Ég á einn bróður og eina systur — and the number agrees in gender (einn / eina / eitt).
Possessives go after the noun, which is definite: konan mín, kærastinn minn, barnið mitt.

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