Mama ni mkarimu kwa wageni.

Ni is the copula, the word that links the subject to a description or identity. In this sentence, it works like is / am / are in English.

So the pattern is:

Mama + ni + mkarimu + kwa wageni
Mother/Mom + is + generous + to guests

In simple present statements like this, ni is very common.

Because -karimu takes a noun-class agreement prefix, and here the subject is a singular human noun. The class 1 singular prefix is m-, so you get:

m-karimu = generous (for one person)

If you were talking about plural people, you would normally see wa-:

wakarimu = generous (for more than one person)

So the m- is there because the sentence is describing one person.

Because noun class in Swahili is not always obvious from the shape of the noun itself.

Mama is a human noun, and human nouns usually take class 1/2 agreement:

• singular: class 1
• plural: class 2

So even though mama does not start with m-, it still behaves like a class 1 singular noun for agreement purposes. That is why the description is mkarimu, not some other form.

This is normal with kinship terms and some other common nouns.

Here kwa means something like to, toward, or with respect to.

So kwa wageni means to guests or toward guests.

That fits English generous to guests very well.

A learner might wonder about na, but na wageni would usually mean with guests, not to guests. So kwa is the right choice here.

The singular is mgeni.

So the pair is:

• mgeni = guest / visitor
• wageni = guests / visitors

This is a very common human noun pattern in Swahili:

• singular m-
• plural wa-

The noun stem here is -geni.

Because Swahili does not normally use articles like English a/an/the.

So mama can mean things like:

• mother
• a mother
• the mother
• mom

The exact meaning depends on context.

The same is true for wageni, which can mean guests, the guests, or sometimes just visitors, depending on the situation.

For a learner, the easiest way to understand it is as generous.

But structurally, words like mkarimu can feel a bit noun-like in Swahili, almost like a generous person. That is one reason they often show noun-class prefixes clearly.

So in practice:

Mama ni mkarimu
can be understood naturally as
Mother is generous

You do not need to overthink the label at first. The important point is that it is the descriptive word linked to mama by ni.

Yes, but the given order is the most neutral and straightforward:

Mama ni mkarimu kwa wageni.

This is a very natural basic pattern: subject + ni + description + prepositional phrase

You can move parts around for emphasis, especially in speech or more advanced usage, for example:

Kwa wageni, mama ni mkarimu.

That puts extra focus on toward guests. But if you are learning, the original order is the safest one to use.

To make it negative, replace ni with si:

Mama si mkarimu kwa wageni.
= Mother is not generous to guests.

To make it a yes/no question, you can often just use question intonation:

Mama ni mkarimu kwa wageni?

You can also add Je, at the beginning:

Je, mama ni mkarimu kwa wageni?
= Is mother generous to guests?

A simple pronunciation guide is:

MA-ma ni mka-RI-mu kwa wa-GE-ni

A few helpful points:

• Swahili vowels are usually pure and consistent:
  • a as in father
  • e as in bed but tenser
  • i as in machine
  • o as in go but without an English glide
  • u as in flute
• g in wageni is a hard g, like in go
• Stress usually falls on the second-to-last syllable of each word:
  • MA-ma
  • mka-RI-mu
  • wa-GE-ni

So if you keep the vowels clear and stress the penultimate syllable, you will sound much more natural.

It can mean more than just mother.

Depending on context, mama can also be used:

• as mom
• as a respectful way to refer to a woman
• as a title, somewhat like madam in some situations

In this sentence, the exact meaning depends on the context and the translation already given to the learner. But yes, mama is a flexible and very common word in Swahili.