Impersonal pronoun cases (mann, manni, manns)

The Impersonal Pronoun "maður"

In Icelandic, the word maður (a man/person) is frequently used as an impersonal pronoun, equivalent to the English "one" or the generic "you." Just like a regular noun, this pronoun changes its form depending on its grammatical role.

CaseFormEnglish
Nominativemaðurone (subject)
Accusativemannone (direct object)
Dativemannione (indirect object)
Genitivemannsone's (possessive)

Accusative: mann

When "one" is the direct object of an action, use the accusative form, mann. For example, the verb trufla (to disturb) governs the accusative case.

An impolite fellow traveler always disturbs one.
Ókurteis samferðamaður truflar mann alltaf.
The presence of rude people disturbs one.
Nærvera dónalegs fólks truflar mann.

Dative: manni

When "one" is an indirect object, or the object of a verb that dictates the dative case—like valda (to cause) or gefa (to give)—use manni.

The crush always causes one irritation.
Troðningurinn veldur manni alltaf pirringi.
An inconsiderate fellow traveler gives one no space.
Tillitslaus samferðamaður gefur manni ekkert pláss.

You must also use manni when "one" is the logical subject of an impersonal verb like líða (to feel). Icelandic structures this as "to one feels."

One feels bad when people are pushing their way in the crush.
Manni líður illa þegar fólkið er að ryðjast í troðningnum.

Genitive: manns

To say "one's" to indicate possession, use the genitive form, manns. In Icelandic, the possessor typically comes after the thing being possessed (e.g., geðslag manns for "one's mood").

The irritation spoils one's mood in the morning.
Pirringurinn skemmir geðslag manns á morgnana.
The noise on the train disturbs one's peace of mind.
Hávaðinn í lestinni raskar hugarró manns.
The crowding on the bus disturbs one's mood.
Troðningurinn í strætó raskar geðslagi manns.