Chumba cha mtu mmoja ni kidogo.

It breaks down like this:

• chumba = room
• cha mtu mmoja = of/for one person
• ni = is
• kidogo = small

So the pattern is:

[noun] + [describing phrase] + ni + [predicate adjective]

A useful thing to notice is that in Swahili, descriptive phrases usually come after the noun they describe.

Cha is the connector that links chumba with mtu mmoja.

It often corresponds to English of or for, depending on context. So:

• chumba cha mtu mmoja = a room of one person / a room for one person

In natural English, this is often just a single room.

Grammatically, cha is a form of the connective -a, and it changes to match the noun before it.

Because the connector agrees with the first noun—the noun being described—not with the noun that comes after it.

Here, the main noun is chumba, so the connector must match chumba.

• chumba belongs to the ki-/vi- noun class
• singular nouns in that class use cha
• so: chumba cha mtu mmoja

Even though mtu is a person, that does not control the form of the connector here.

Because -moja agrees with the noun it describes.

Here it describes mtu, so it takes the class-1 singular form:

• mtu mmoja = one person

Compare:

• kitabu kimoja = one book
• chumba kimoja = one room
• mtu mmoja = one person

So mmoja is the correct agreeing form with mtu.

Because the adjective -dogo also has to agree with the noun it refers to.

Here it refers to chumba, which is in the ki-/vi- class, so the adjective becomes:

• ki + dogo → kidogo

So:

• chumba ni kidogo = the room is small

This agreement is very common in Swahili adjectives.

Here it means small.

That is because it is describing chumba and shows noun-class agreement.

In other contexts, kidogo can also mean a little or a bit, for example:

• subiri kidogo = wait a little

So the word can have different uses, but in this sentence it is clearly an adjective meaning small.

Ni is the copula here—the word that works like is in English.

So:

• Chumba cha mtu mmoja ni kidogo = The single room is small

In sentences where a subject is being linked to a description or identity, ni is very common.

But not every English is is translated with ni. For example, when talking about location, Swahili often uses forms like iko, upo, yuko, and so on instead.

Swahili does not have articles like a, an, and the.

So chumba can mean:

• a room
• the room

The exact meaning depends on context.

That means Chumba cha mtu mmoja ni kidogo could be understood as:

• The single room is small
• or, depending on context, A single room is small

Yes. It is a very natural way to say a room for one person, which is what English often calls a single room.

This is different from:

• chumba kimoja = one room

So:

• chumba cha mtu mmoja = single room
• chumba kimoja = one room

That distinction is important.

Yes. That would mean:

• a small single room

Here both descriptive parts come after the noun:

• chumba = room
• kidogo = small
• cha mtu mmoja = for one person

So Swahili often stacks modifiers after the noun.

A natural plural version is:

Vyumba vya mtu mmoja ni vidogo.

That means Single rooms are small.

Notice the agreement changes:

• chumba → vyumba
• cha → vya
• kidogo → vidogo

So when the noun changes class/number, the connector and adjective change too.