Pilipili nyingi ni mbaya kwa afya yako.

In Swahili, adjectives usually come after the noun they describe.

So:

• pilipili nyingi = a lot of pepper / many peppers
• mtu mzuri = a good person
• chakula kibaya = bad food

This is one of the basic word-order differences from English.

Nyingi comes from the adjective stem -ingi, which means much, many, or a lot of.

In this sentence, it means there is a large amount of pepper/chili. In English, you might translate it as:

• much pepper
• a lot of chili
• many peppers

The best English choice depends on how you are interpreting pilipili in context.

Because Swahili adjectives must agree with the noun class of the noun they describe.

Pilipili belongs to the N class (class 9/10), so the form of -ingi becomes nyingi.

Compare:

• pilipili nyingi
• nyumba nyingi
• ndizi nyingi

But with a different noun class, you get different forms, such as:

• miti mingi = many trees

So nyingi is the correct agreement form for pilipili.

It can be a little tricky, because pilipili often has the same form in singular and plural.

That is common with many class 9/10 nouns in Swahili. So the word itself does not change, and context helps you understand the meaning.

In this sentence, nyingi gives the idea of a large quantity. In English, that may sound like:

• much pepper/chili if you think of it as a substance
• many peppers/chilies if you think of separate items

Ni is the equivalent of is/are here. It links the subject and the description:

• Pilipili nyingi = a lot of pepper / many peppers
• ni mbaya = is bad

So ni is the word that makes the sentence mean is.

A useful thing to remember is that ni does not change for singular or plural.

The basic adjective stem is -baya, meaning bad or harmful. With an N-class noun like pilipili, it appears as mbaya.

So:

• pilipili ... mbaya
• nyumba mbaya
• ndizi mbaya

Here mbaya means bad in the sense of not good for you or harmful.

Literally, it means for your health.

• kwa = for / to / at / by, depending on context
• afya = health
• yako = your

In this sentence, mbaya kwa afya yako means bad for your health.

This pattern is very common:

• nzuri kwa afya = good for health
• mbaya kwa mwili = bad for the body

In Swahili, possessives agree with the thing possessed, not with the person who owns it.

Here, the possessed noun is afya (health), and afya is an N-class noun. That is why your becomes yako.

So:

• afya yako = your health

Compare with other noun classes:

• kitabu chako = your book
• mtoto wako = your child

So the form of your changes depending on the noun that follows.

Because Swahili normally does not use articles the way English does.

So Pilipili nyingi can be understood from context as something like:

• a lot of pepper
• many peppers
• pepper in large amounts

English needs articles more often than Swahili does, so when translating, you usually add them only if the context requires them.