Ompelija ompelee napin kiinni huomenna.

Finnish does not have articles like English the and a/an.

So:

• ompelija can mean the tailor/seamstress or a tailor/seamstress
• napin can mean the button or a button

Context tells you which one is meant. If Finnish speakers want to be more specific, they can add other words such as se (that/the one) or yksi (one/a certain), but normally they do not need an article.

No. Ompelija is grammatically gender-neutral.

Finnish nouns usually do not mark male vs. female, and Finnish also does not have gendered articles. So ompelija just means a person who sews or a tailor/seamstress/dressmaker, depending on context.

Because they are related words.

They both come from the verb ommella (to sew):

• ompelija = sewer / tailor / seamstress / dressmaker
• ompelee = he/she sews or is sewing

The ending -ja / -jä often makes an agent noun in Finnish: a person who does the action.

So ompelija is literally something like the one who sews.

Ompelee is the 3rd person singular present tense form of ommella.

So it matches subjects like:

• hän ompelee = he/she sews
• ompelija ompelee = the tailor/seamstress sews

A learner may expect the dictionary form to look more similar, but Finnish verbs often change a bit between the infinitive and the finite forms. Here:

• dictionary form: ommella
• present stem/form: ompelee

Finnish usually does not have a separate future tense the way English does.

Instead, Finnish often uses the present tense for future meaning when the time is clear from context. In this sentence, huomenna (tomorrow) makes the future meaning obvious.

So Finnish says, literally, something like:

• The tailor sews the button on tomorrow

but in natural English we say:

• The tailor will sew the button on tomorrow

Because the object is in the total object form here.

In this sentence, the sewing is viewed as a completed, result-producing action: the button gets sewn on / attached. For a singular noun, that total object often looks like the genitive singular, which ends in -n.

So:

• nappi = base form, button
• napin = total object form here

A useful contrast:

• ompelija ompelee nappia = the action is viewed as ongoing, incomplete, or indefinite
• ompelija ompelee napin kiinni = the action reaches a result: the button gets attached

Many textbooks explain this as genitive object or accusative object; the key practical idea is that -n here signals a complete whole object.

Here kiinni means something like attached, fastened, or shut/closed, depending on the verb.

With ommella, the expression ommella ... kiinni means:

• to sew something on
• to sew something shut
• to sew something attached

So napin kiinni is not just a button; it gives the result of the action: the button ends up attached.

This is a very common Finnish pattern: a verb plus a word like kiinni to show the resulting state.

Because in Finnish, in this kind of construction, the object usually comes before kiinni.

So the normal order is:

• ommella napin kiinni
• panna ovi kiinni
• lyödä ikkuna kiinni

This is similar to a verb + object + result word pattern. The object is named first, and then kiinni tells you the result state.

So ompelee napin kiinni is the natural order.

Yes. Finnish word order is fairly flexible.

This sentence has a neutral, natural order:

• Ompelija ompelee napin kiinni huomenna.

But you could also say:

• Huomenna ompelija ompelee napin kiinni.
• Ompelija ompelee huomenna napin kiinni.

These all mean basically the same thing, but the emphasis changes slightly:

• starting with huomenna highlights the time
• putting it at the end sounds neutral and natural in many contexts

It can mean either one.

Because Finnish has no articles, napin by itself does not tell you whether English should use the or a. You choose that from context.

So depending on the situation, this could correspond to:

• the button
• a button

If Finnish needs to be more explicit, it can add words such as:

• sen napin = that button / the specific button
• yhden napin = one button / a single button