Fleiri koma í kvöld.

Fleiri is the comparative form of margir / mikið / margt and means more.

In this sentence, it stands on its own, so it means something like:

• more people
• others / additional people

Icelandic often leaves out the noun when it is understood from context, so Fleiri koma í kvöld can mean More are coming tonight or More people are coming tonight.

Because Icelandic can omit a noun when it is obvious from context.

So fleiri by itself can function almost like more ones or more people in English, although we would not usually say it that way in natural English. The full idea is understood without stating fólk.

For example:

• Fleiri koma í kvöld. = More people are coming tonight.

This is very common in Icelandic.

Koma here is the present tense of the verb að koma (to come), specifically the 3rd person plural form:

• ég kem = I come
• þú kemur = you come
• hann/hún/það kemur = he/she/it comes
• við komum = we come
• þið komið = you all come
• þeir/þær/þau koma = they come

Since fleiri implies a plural group of people, the verb is plural too: koma.

Yes, very possibly.

Icelandic often uses the present tense for near-future meaning, just like English sometimes does:

• They come tonight
• They are coming tonight
• They will come tonight

The adverbial phrase í kvöld (tonight / this evening) helps give it a future sense if the people have not arrived yet. So depending on context, Fleiri koma í kvöld could be understood as:

• More are coming tonight
• More will come tonight

Í kvöld means tonight or this evening.

It is a fixed and very common time expression:

• í dag = today
• í kvöld = tonight
• í nótt = tonight / during the night
• á morgun = tomorrow

A useful distinction:

• í kvöld usually refers to the evening
• í nótt usually refers to the nighttime / during the night

The preposition í can take either the accusative or the dative, depending on meaning.

With many time expressions like í kvöld, it appears in a fixed phrase meaning tonight / this evening. You do not need to analyze it too deeply at first; it is best learned as a set expression.

So for a learner, the most useful thing is simply:

• í kvöld = tonight

In meaning, it is plural here, because it refers to more than one person.

Grammatically, fleiri is a comparative form that can be used quite flexibly, but in this sentence it clearly refers to a plural group, which is why the verb is plural:

• Fleiri koma = More come / More are coming

So even though there is no separate noun, the sentence behaves as if it meant more people.

Because fleiri is the topic or focus of the sentence: the speaker is emphasizing that more people are coming.

Icelandic word order is flexible, but this order is very natural:

• Fleiri koma í kvöld.

It answers a question like:

• Eru allir komnir? = Has everyone arrived?
• Nei, fleiri koma í kvöld. = No, more are coming tonight.

So putting fleiri first makes good sense both grammatically and informationally.

Not if you mean more people.

• Fleiri koma refers to more people / more plural entities
• Fleira kemur would refer to more things / more stuff in a neuter singular collective sense

So:

• Fleiri koma í kvöld. = More people are coming tonight
• Fleira kemur í kvöld. = More is coming tonight / There is more coming tonight (for example, more food, more equipment, more news)

A rough pronunciation guide for an English speaker is:

• Fleiri ≈ FLAY-ri
• koma ≈ KOH-ma
• í ≈ ee
• kvöld ≈ something like kvœlt or kvelt, with a rounded vowel that does not match English exactly

A few pronunciation notes:

• ei in fleiri sounds like ay
• ó in koma is a long o
• kv is pronounced with both sounds, roughly kv
• ld at the end of kvöld may sound a bit different from careful spelling pronunciation, depending on speaker and dialect

If you want to sound natural, it is best to learn í kvöld as a chunk.

Yes, very natural.

It is short, idiomatic, and exactly the kind of sentence Icelandic speakers would use in conversation when the context is already known.

For example:

• Við erum sex núna, en fleiri koma í kvöld.
• We are six now, but more are coming tonight.

So this is a very useful real-life pattern:

• [comparative word] + koma + time expression

Here are a few useful parallels:

• Fleiri koma á morgun. = More are coming tomorrow.
• Fleiri koma seinna. = More are coming later.
• Margir koma í kvöld. = Many are coming tonight.
• Allir koma í kvöld. = Everyone is coming tonight.
• Vinir mínir koma í kvöld. = My friends are coming tonight.

These help you see the pattern:

• something/someone + koma
  • time phrase