-inn

Etymology
From.

Suffix

 * 1) marks definiteness of a noun; the

Etymology 1
From, from , from. Originally, this suffix was used to create adjectives that refer to materials, such as Old Norse, from and , from. Later, use of this suffix was extended to create adjectives from verbs, such as Old Norse, from.

Declension
Note that the positive degree strong masculine accusative singular is -inn, and not the would-be expected form *-nan.

Derived terms
When used, it often causes i-umlaut.

Etymology 2
From (cf.  and, ancestors of  and ), from , the ending of all past participles of strong verbs. The ending also results in a-mutation, except before a nasal consonant. It itself came from.

Declension
Note that the masculine accusative singular is -inn, and not the would-be expected form *-nan.

Etymology 3
Suffixed form of, , from.

Suffix

 * 1) the

Usage notes
The definite suffix is added to a noun to make it definite, but this is not nearly as common as, and is never done in the earliest texts, including most poetry, legal texts and runic inscriptions. There are four rules for how to apply the definite suffix to a given noun.
 * 1) There must be agreement between the suffix and the noun, in gender, case and number.
 * 2) The suffixed article will lose its -i- after the short closing vowels -a, -i, and -u. Note that, usually, contraction will happens also after a long closing vowel, but not if it leaves the word monosyllabic.
 * , from
 * , from
 * , from
 * , from
 * , from
 * 1) In the plural, the suffixed article will lose its -i- after -r.
 * , from
 * , from
 * , from
 * 1) In the dative plural, the suffixed article will lose its -i-, and the noun will lose its final -m.
 * , from
 * , from