Hún er mjög nákvæm þegar hún fyllir út eyðublöð og les samninga.

Nákvæm means precise, thorough, or meticulous. In this sentence, it suggests that she pays close attention to details when dealing with forms and contracts.

A learner might also compare it with words like:

• varkár = cautious, careful in the sense of avoiding danger or risk
• nákvæmur/nákvæm/nákvæmt = precise, exact, detail-oriented

So here nákvæm is a good fit because the sentence is about being accurate and thorough with paperwork.

This is a very standard Icelandic structure:

• hún = she
• er = is
• mjög = very
• nákvæm = precise/thorough

So hún er mjög nákvæm literally means she is very precise.

This works just like English she is very careful/thorough, with:

• subject
• verb to be
• adverb
• adjective

Icelandic adjectives change form to match the noun or pronoun they describe in gender, number, and case.

Here, hún refers to a singular feminine subject, so the adjective appears in the feminine singular nominative form:

• masculine: nákvæmur
• feminine: nákvæm
• neuter: nákvæmt

Because the sentence is about she, the correct form is nákvæm.

Here þegar means when.

So:

• þegar hún fyllir út eyðublöð og les samninga = when she fills out forms and reads contracts

Be careful: þegar can also mean already in other contexts. For example:

• Ég er þegar búinn. = I am already finished.

So the meaning of þegar depends on context. In this sentence, it is clearly the conjunction when.

Icelandic normally states the subject again in the subordinate clause.

So the sentence has two clauses:

1. Hún er mjög nákvæm = She is very thorough
2. þegar hún fyllir út eyðublöð og les samninga = when she fills out forms and reads contracts

In English, we also usually repeat the subject: when she fills out forms and reads contracts, not just when fills out forms...

So the repeated hún is completely normal.

Að fylla út is a verb phrase meaning to fill out or to fill in.

The verb is:

• fylla = to fill
• út = out

In Icelandic, some verbs combine with particles like this, similar to English phrasal verbs. In a finite clause, the verb and particle are often separated:

• hún fyllir út eyðublöð = she fills out forms

So:

• fyllir = present tense of fylla
• út stays after the verb

This is normal word order.

Fyllir is the 3rd person singular present tense of að fylla.

That means it is used with:

• hann = he
• hún = she
• það = it

Examples:

• Ég fylli út eyðublað. = I fill out a form.
• Þú fyllir út eyðublað. = You fill out a form.
• Hún fyllir út eyðublöð. = She fills out forms.

So fyllir matches hún.

Eyðublöð means forms in an indefinite sense, while eyðublöðin means the forms.

Here the sentence is speaking generally about the kind of activity she does:

• fyllir út eyðublöð = fills out forms
• les samninga = reads contracts

This is similar to English, where we often also leave nouns indefinite in general statements.

So eyðublöð is the natural choice unless you specifically mean particular forms already known from context.

This is because les takes a direct object, and the noun samningar changes form in the accusative plural.

The noun is:

• nominative plural: samningar = contracts
• accusative plural: samninga

Since she is reading contracts, contracts is the object of the verb, so Icelandic uses the accusative plural:

• hún les samninga

This is a very common thing in Icelandic: nouns often change form depending on their grammatical role.

Yes. Les is the 3rd person singular present tense of að lesa = to read.

So:

• ég les = I read
• þú lest = you read
• hún les = she reads

In the sentence:

• hún les samninga = she reads contracts

This present tense can describe a habitual action, not only something happening right now.

Most naturally, it describes a general characteristic or habitual behavior.

• Hún er mjög nákvæm þegar hún fyllir út eyðublöð og les samninga. = She is very thorough when she fills out forms and reads contracts.

This sounds like a general statement about how she behaves in those situations.

Icelandic present tense, like English present tense, can often express:

• habits
• repeated actions
• general truths

So the sentence does not have to mean she is literally doing it right now.

Because the sentence is talking about forms and contracts in a general sense, not specific ones.

In Icelandic, the definite article is usually attached to the noun as a suffix:

• eyðublöð = forms
• eyðublöðin = the forms
• samninga = contracts
• samningana = the contracts

Since the sentence means something like whenever she deals with forms and contracts, the indefinite forms are the natural choice.

The sentence can be divided like this:

• Hún = subject
• er = verb
• mjög nákvæm = complement
• þegar hún fyllir út eyðublöð og les samninga = subordinate clause

So the overall structure is:

• She is very thorough
• when she fills out forms and reads contracts

Inside the subordinate clause, the order is also straightforward:

• þegar
• hún
• fyllir út eyðublöð
• og les samninga

This is a good example of clear, natural Icelandic sentence structure.