Kila asubuhi, mimi hutumia mswaki wangu bafuni.

Kila asubuhi means every morning.

• kila = every / each
• asubuhi = morning

This is a very common pattern in Swahili:

• kila siku = every day
• kila wiki = every week
• kila mwaka = every year

So kila asubuhi is simply a time expression telling you how often the action happens.

Mimi means I / me, but in this sentence it is mainly there for emphasis or clarity.

In Swahili, the verb often carries enough information by itself, so subject pronouns are often left out. But with the hu- habitual form, the subject is commonly made clear by context or by an explicit pronoun/noun.

So:

• Mimi hutumia... = I use / I usually use...
• Without mimi, the sentence could still be understood from context, but mimi makes the subject explicit.

It can also add a slight feeling of contrast, like As for me, I use...

Hutumia comes from the verb kutumia, which means to use.

Here it is made of:

• hu- = habitual marker
• -tumia = use

So hutumia means something like:

• use regularly
• usually use
• use as a habit

Because the sentence also has kila asubuhi, the habitual sense fits very well: this is something done again and again, not just once.

This is a very common question.

• hutumia = use habitually / usually use
• ninatumia = I am using / I use

In many contexts, ninatumia can sound more like the general present or something happening now, while hutumia strongly suggests a repeated habit.

So in this sentence:

• Mimi hutumia mswaki wangu bafuni. = I use my toothbrush in the bathroom every morning.
  This sounds habitual and natural with kila asubuhi.

If you said:

• Ninatumia mswaki wangu bafuni

it could still be understood, but it does not emphasize the repeated routine as clearly as hutumia does.

Mswaki wangu means my toothbrush.

• mswaki = toothbrush
• wangu = my

So the object of the verb is mswaki wangu: the thing being used is my toothbrush.

A useful note: mswaki can also refer historically to a brushing stick, but in modern everyday use it commonly means toothbrush.

In Swahili, possessives usually come after the noun, not before it as in English.

So:

• mswaki wangu = toothbrush my = my toothbrush
• kitabu changu = book my = my book
• rafiki yangu = friend my = my friend

This is a normal Swahili pattern. English says my toothbrush, but Swahili says toothbrush my.

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

The basic possessive idea is -angu = my, but the beginning changes depending on noun class:

• wangu
• yangu
• changu
• vyangu
• langu
• yangu
• etc.

Here, mswaki takes the form wangu, so:

• mswaki wangu = my toothbrush

This agreement system is a major feature of Swahili grammar.

Bafuni means in the bathroom or at the bathroom, depending on context.

The important part is -ni, which is a locative ending. It often adds the meaning of:

• in
• at
• to

So:

• bafu = bathroom / bath area
• bafuni = in the bathroom / at the bathroom

This is why there is no separate word for in here. The location idea is built into the noun itself.

Because Swahili often expresses location by changing the noun, rather than by adding a separate preposition.

In English:

• in the bathroom

In Swahili:

• bafuni

The -ni ending does a lot of the work that English prepositions like in, at, or to do.

So bafuni is not just bathroom; it is in/at the bathroom.

Swahili does not normally use articles like a, an, and the the way English does.

So a noun like mswaki can mean:

• a toothbrush
• the toothbrush
• toothbrush

The exact meaning depends on context.

In this sentence, English naturally translates it as my toothbrush and the bathroom, but Swahili does not need separate article words to say that.

The sentence uses a very common and natural order:

• Kila asubuhi = time
• mimi = subject
• hutumia = verb
• mswaki wangu = object
• bafuni = location

So the pattern is roughly:

Time + Subject + Verb + Object + Place

Swahili word order is fairly flexible, though. You can move things around for emphasis, especially time and place expressions. But the given order is clear and natural for a learner.

It is grammatical and understandable, especially if you want to say you use a toothbrush.

However, in everyday Swahili, a very common expression for brush your teeth is:

• kupiga mswaki

So:

• Mimi hupiga mswaki kila asubuhi. = I brush my teeth every morning.

That said, hutumia mswaki wangu is still understandable if the focus is literally on using my toothbrush rather than naming the activity in the most idiomatic way.