Zipu ya koti langu iko wazi na kola ya blauzi yangu imekunjika kidogo.

Swahili does not use articles like the or a/an.

So:

• koti langu can mean my coat
• blauzi yangu can mean my blouse
• zipu ya koti langu can mean the zipper of my coat

Definiteness usually comes from context, not from a separate word.

Because the phrase means the zipper of my coat, not my zipper.

Swahili builds this in two parts:

• koti langu = my coat
• zipu ya koti langu = the zipper of my coat

So the structure is:

possessed thing + ya + owner phrase

Here:

• zipu = zipper
• ya koti langu = of my coat

The same pattern appears in:

• kola ya blauzi yangu = the collar of my blouse

Ya is a possessive linker, often translated as of or belonging to.

So:

• zipu ya koti langu = zipper of my coat
• kola ya blauzi yangu = collar of my blouse

It is not a separate word meaning exactly the same as English of in every case, but that is the easiest way to understand it here.

Also, ya changes according to noun class. In this sentence it is ya because zipu and kola are in the noun class that takes ya.

Because possessives in Swahili agree with the noun class of the noun they describe.

The possessive idea my is based on the stem -angu, but the beginning changes:

• langu
• yangu
• and other forms in other noun classes

In this sentence:

• koti langu uses langu
• blauzi yangu uses yangu

So both mean my, but they match different noun classes.

This is very normal in Swahili and is one of the main things learners need to get used to.

Iko is being used to describe the state or condition of the noun: it is open.

Here:

• zipu is the subject
• iko wazi = is open

Swahili often uses forms like iko, uko, ziko, etc. to describe where something is or what state it is in.

So:

• zipu ya koti langu iko wazi = the zipper of my coat is open

Using ni here would not be the most natural choice for this kind of physical state.

The i- is the subject agreement prefix for the noun class of zipu and kola here.

So:

• zipu ... iko wazi
• kola ... imekunjika

That i- tells you the verb is agreeing with a singular noun in that noun class.

This is a key feature of Swahili grammar: verbs agree with their subjects.

Imekunjika comes from the verb -kunjika, which means something like:

• to become folded
• to get bent
• to get creased

So kola ya blauzi yangu imekunjika kidogo means the collar has become a little folded or slightly bent/creased.

The form imekunjika includes:

• i- = subject agreement
• -me- = perfect aspect
• kunjika = become folded/bent

Very often, this perfect form describes a present result:

• it has become folded
• therefore it is folded now

Because -kunja is usually transitive: to fold/bend something.

Examples:

• Nimekunja shati = I have folded the shirt

But -kunjika is intransitive:

• to become folded
• to get bent

In this sentence, the collar is not doing the action to something else. The collar itself is the thing that has become bent or folded. So -kunjika is the right form.

Kidogo means a little, slightly, or a bit.

So:

• imekunjika kidogo = is slightly folded / has become a little bent

It softens the description. The collar is not badly folded, just a little.

In Swahili, words like kidogo often come after the word or phrase they modify.

So:

• imekunjika kidogo = has become folded slightly

That is a natural Swahili order.

English usually prefers slightly folded, but Swahili commonly puts kidogo after the verb phrase.

Yes, they are loanwords, and that is very common in Swahili, especially for clothing and modern objects.

They may look familiar to an English speaker:

• zipu
• koti
• kola
• blauzi

Even though they are borrowed words, they still follow normal Swahili grammar:

• they take Swahili possessive forms
• they trigger Swahili agreement
• they fit into Swahili noun classes

So a word may look English-like, but its grammar in the sentence is fully Swahili.