Karibu kwangu; jisikie nyumbani.

Here, karibu means welcome or come in.

It is a very common Swahili word used when inviting someone in, offering something, or making someone feel received. In other contexts, karibu can also mean near or close, but in this sentence it clearly means welcome.

For example:

• Karibu! = Welcome! / Come in!
• Karibu chakula. = Please, have some food.

Kwangu means to my place, at my place, or my home/place in this kind of sentence.

It is made from:

• kwa = a preposition often used for a person’s place, home, or area
• -angu = my

So:

• kwangu = at my place / to my place
• kwako = at your place
• kwake = at his/her place
• kwetu = at our place

So Karibu kwangu is very naturally understood as Welcome to my place.

No, not in this sentence.

A learner might notice that karibu can also mean near, but here karibu is being used as a hospitality expression: welcome.

Also, kwangu means to/at my place, not to me in a simple physical sense. So the whole phrase is understood idiomatically as Welcome to my place.

Jisikie comes from the verb -sikia, which often means hear, but in some contexts it also means feel.

In jisikie, the prefix ji- is reflexive, so the idea is something like:

• feel yourself
• more naturally: feel or consider yourself

In the full phrase jisikie nyumbani, the natural English meaning is feel at home.

So even if the literal structure looks a bit unusual from an English point of view, the phrase is completely normal in Swahili.

This is because Swahili often uses the -e ending in a subjunctive/soft imperative form for invitations, suggestions, and commands.

The base verb is:

• -sikia

But in this kind of expression, it becomes:

• -sikie

And with the reflexive prefix:

• jisikie

So jisikie nyumbani is a natural way to say feel at home.

For an English speaker, the easiest way to think about it is:

• jisikia = dictionary/base-style form
• jisikie = the form used here for feel...

Nyumbani means at home or home.

It comes from:

• nyumba = house
• -ni = a locative ending, often meaning in/at/to

So:

• nyumba = house
• nyumbani = at home / in the house / home

In this sentence, nyumbani is best understood idiomatically as at home:

• jisikie nyumbani = feel at home

It could, but the meaning would shift slightly.

In Karibu kwangu; jisikie nyumbani, the first part already says to my place. The second part, jisikie nyumbani, is an idiomatic expression meaning feel at home, not necessarily feel at my home in a literal repeated way.

So the sentence works like this:

• Karibu kwangu = Welcome to my place
• jisikie nyumbani = Make yourself feel at home

If you added kwangu again, it would be more explicit, but the shorter version sounds natural and idiomatic.

Yes. It is a very common and natural hospitality expression.

Word-for-word, it may look like feel yourself at home, but the real meaning is simply:

• feel at home
• make yourself at home

So this is the kind of phrase you should learn as a whole expression, not only word by word.

It is polite, warm, and natural. It works well in everyday speech.

It is not overly formal, but it is respectful and hospitable. A host could easily say this to a guest:

• at home
• in an office
• when receiving visitors

So it is best thought of as friendly and polite everyday Swahili.

Yes, but you would normally change the forms to plural.

To a group, you could say:

Karibuni kwangu; jisikieni nyumbani.

Here:

• Karibuni = welcome to several people
• jisikieni = feel at home addressed to several people

So:

• singular: Karibu kwangu; jisikie nyumbani.
• plural: Karibuni kwangu; jisikieni nyumbani.

No. The semicolon is just punctuation joining two closely related ideas.

You could also write:

• Karibu kwangu, jisikie nyumbani.
• Karibu kwangu. Jisikie nyumbani.

The meaning stays basically the same:

• first, a welcome
• then, an invitation to relax and feel comfortable

Yes. Very often, Karibu! alone is enough.

Depending on the situation, it can mean:

• Welcome!
• Come in!
• You’re welcome!
• Please, go ahead

Swahili relies a lot on context, and karibu is one of those extremely flexible words that speakers use all the time. In your sentence, adding kwangu makes it specifically Welcome to my place.