Gharama ya ziada ni kubwa.

In Swahili, a noun often connects to another noun-like word with a linking word called the associative. Here:

• gharama = cost/expense
• ya = of
• ziada = addition/extra

So gharama ya ziada is literally cost of extra/addition, which is how Swahili expresses extra cost or additional cost.

English often puts the modifier directly before the noun, but Swahili frequently uses this noun + associative + noun pattern.

Ya agrees with the noun gharama.

Swahili nouns belong to noun classes, and words that connect to them often have to match that class. Gharama is treated as a class 9 noun in the singular, so the correct associative form is ya.

That is why you get:

• gharama ya ziada = extra cost

If you were talking about plural or multiple costs, you might see:

• gharama za ziada = extra costs

So the change from ya to za is due to agreement.

Ziada means extra, additional amount, addition, or excess, depending on context.

In this sentence, it is not acting like a simple English-style adjective placed directly before the noun. Instead, it appears in the phrase ya ziada, which functions like additional or extra.

So although English says extra cost, Swahili says something closer to cost of addition/extra.

Ni is the copula, the word that means is, am, or are.

So:

• Gharama ya ziada = the extra cost
• ni = is
• kubwa = big/large

Together:

• Gharama ya ziada ni kubwa. = The extra cost is high/large.

In simple identification or description sentences, ni is extremely common.

Yes. Kubwa literally means big, large, or great.

When talking about costs, prices, amounts, or problems, Swahili often uses kubwa in a way that English might translate as:

• high
• large
• substantial

So gharama ya ziada ni kubwa is very natural for the extra cost is high or the additional expense is large.

Good question. Ghali means expensive/dear, while kubwa means big/large/high.

The difference is roughly this:

• ghali describes something as expensive
• kubwa describes the amount or size of a cost as large/high

So:

• Bidhaa hii ni ghali. = This item is expensive.
• Gharama ni kubwa. = The cost is high.

In your sentence, the focus is on the size of the extra cost, so kubwa is a very good choice.

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

So gharama ya ziada can mean:

• an extra cost
• the extra cost
• extra cost

The exact meaning depends on context.

That is very normal in Swahili. You often have to rely on the situation or previous conversation to know whether English would use a or the.

The basic structure is:

• Gharama ya ziada = subject noun phrase
• ni = is
• kubwa = predicate adjective

So the pattern is:

noun phrase + ni + adjective

That is quite close to English:

• The extra cost is high.

But inside the subject phrase, Swahili differs from English:

• English: extra cost
• Swahili: cost of extra / cost of addition

So the full sentence is easy to understand once you get used to that noun-linking pattern.

In this sentence, it is understood as singular or as an uncountable idea: the extra cost.

But gharama is one of those nouns whose form often does not change between singular and plural. The agreement around it helps show the meaning.

Compare:

• gharama ya ziada = extra cost
• gharama za ziada = extra costs

So even if the noun itself stays the same, the linker can help show whether the meaning is singular or plural.

Swahili adjectives often agree with noun class, but with some classes and some adjective stems, the agreement is not always obvious on the surface.

With class 9 nouns like gharama, kubwa is the normal form you will see here:

• gharama kubwa = a big/high cost
• gharama ya ziada ni kubwa = the extra cost is high

So even though agreement is an important part of Swahili grammar, you do not always see a clearly different prefix on every adjective.

Yes. This is a very useful pattern.

For example:

• malipo ya ziada = extra payment / additional payment
• gharama ya ziada = extra cost
• ada ya ziada = additional fee

You may also see plural forms such as:

• saa za ziada = extra hours / overtime hours

So learning -a + ziada as a pattern is very helpful.

A simple learner-friendly pronunciation is:

gha-RA-ma ya zi-A-da ni KU-bwa

A few notes:

• Swahili vowels are usually pure and clear:
  • a as in father
  • i as in machine
  • u as in rule
• Stress is usually on the second-to-last syllable:
  • ghaRAma
  • ziAda
  • KUbwa

The first sound in gharama may vary a bit depending on speaker and accent, but if you say a clear g sound, you will usually be understood.