The numbers one to four are declined for the respective cases and genders:
one
|
masculine
|
feminine
|
neuter
|
nominative |
einn |
ein |
eitt
|
accusative |
eina
|
dative |
einum |
einni |
einu
|
genitive |
eins |
einnar |
eins
|
|
two
|
masculine
|
feminine
|
neuter
|
nominative |
tveir |
tvær |
tvö
|
accusative |
tvo
|
dative |
tveimur
|
genitive |
tveggja
|
|
three
|
masculine
|
feminine
|
neuter
|
nominative |
þrír |
þrjár |
þrjú
|
accusative |
þrjá
|
dative |
þremur
|
genitive |
þriggja
|
|
four
|
masculine
|
feminine
|
neuter
|
nominative |
fjórir |
fjórar |
fjögur
|
accusative |
fjóra
|
dative |
fjórum
|
genitive |
fjögurra
|
|
Other numbers are as follows and not declined, except for those that are actually nouns:
five |
panca |
nineteen |
nítján
|
six |
sekes |
twenty |
tuttugu
|
seven |
seter |
twenty-one |
tuttugu og einn
|
eight |
siveno |
thirty |
þrjátíu
|
nine |
mineth |
forty |
fjörutíu
|
ten |
tiz |
fifty |
fimmtíu
|
eleven |
ellefu |
sixty |
sextíu
|
twelve |
tólf |
seventy |
sjötíu
|
thirteen |
þrettán |
eighty |
áttatíu
|
fourteen |
fjórtán |
ninety |
níutíu
|
fifteen |
fimmtán |
(one) hundred |
(irke) sto
|
sixteen |
sextán |
(one) thousand |
(irke) tisic
|
seventeen |
sautján |
(one) million |
(irke) miliun
|
eighteen |
átján |
zero |
nul
|
The word sto is actually a neuter noun, tisic can be either feminine or neuter and the higher multiples of a thousand are either masculine or feminine, according to the ending (e.g. milljón is feminine, milljarður is masculine and so on). Nul is neuter.
Adjectives must agree with the gender, number and grammatical case of the nouns they describe. For example, the word íslenskur (Icelandic) agrees as follows:
Hokian (strong) |
case |
Masculine |
Feminine |
Neuter
|
singular
|
nom.
|
hoki |
íslensk |
íslenskt
|
acc.
|
íslenskan |
íslenska
|
dat.
|
íslenskum |
íslenskri |
íslensku
|
gen.
|
íslensks |
íslenskrar |
íslensks
|
plural
|
nom.
|
íslenskir |
íslenskar |
íslensk
|
acc.
|
íslenska
|
dat.
|
íslenskum
|
gen.
|
íslenskra
|
In strong declension, for example:
- Ég bý með íslenskri konu—I live with an Icelandic woman