Baada ya kupiga mswaki, tema mate kwenye sinki.

Baada ya means after.

In this sentence, baada ya kupiga mswaki means after brushing your teeth.

A very common pattern in Swahili is:

baada ya + verb noun / infinitive

So here:

• baada ya = after
• kupiga mswaki = brushing your teeth / to brush your teeth

Together, they form a time expression: after brushing your teeth.

Yes, -piga often means hit, beat, or strike, but in many expressions it has a broader meaning.

In kupiga mswaki, the whole expression means to brush your teeth.

So you should learn -piga not only as a literal verb, but also as part of common fixed expressions. Swahili often uses verb combinations that do not translate word-for-word into natural English.

Here:

• ku-piga = to do the action of brushing
• mswaki = toothbrush / tooth-cleaning stick

So kupiga mswaki is the normal idiomatic way to say brush your teeth.

Mswaki can mean toothbrush. Traditionally, it can also refer to a chewing stick / tooth-cleaning stick, but in everyday modern use it is commonly understood as toothbrush.

So:

• kupiga mswaki = to brush your teeth
• mswaki = toothbrush

Even though English uses the verb brush, Swahili expresses this action with the noun mswaki.

Because the two verbs are in different forms.

1. kupiga is an infinitive:

   • ku- = to
   • -piga = hit / brush in this expression

   After baada ya, Swahili commonly uses the infinitive:

   • baada ya kupiga mswaki = after brushing your teeth

2. tema is an imperative:

   • tema! = spit!

So the sentence combines:

• a time phrase: after brushing your teeth
• a command: spit into the sink

Tema means spit!

It is the singular informal imperative, used when speaking to one person.

So the sentence is giving a direct instruction to one listener:

• tema mate kwenye sinki = spit saliva into the sink

If you were addressing more than one person, the imperative would usually be:

• temeni mate kwenye sinki = spit into the sink, all of you

Mate means saliva or spit.

Even though it looks plural to an English speaker, it is just the normal Swahili noun form. You do not need to think of it as literally salivas.

So:

• tema mate = spit saliva / spit

In practice, this phrase naturally means spit.

Both can work, but tema mate is more explicit.

• tema = spit
• tema mate = spit saliva / spit out saliva

Adding mate makes the action clearer and more concrete. Swahili often uses verb + noun combinations where English might use just a verb by itself.

Kwenye means in, on, at, or into, depending on context.

Here it means something like into or in:

• kwenye sinki = into the sink / in the sink

It is a very common location word in everyday Swahili.

You can think of it as a general locative form used for places and surfaces.

Both kwenye and katika can sometimes be translated as in, but they are used a bit differently.

• kwenye is very common in everyday speech for location: on / in / at / to
• katika often feels more specifically inside / within

With sinki, kwenye sinki sounds natural and idiomatic for in/into the sink.

So for a learner, the important thing is:

• kwenye sinki is a normal, natural phrase

Sinki is a loanword from English sink, adapted to Swahili pronunciation and spelling.

This is very common in Swahili, especially for modern objects.

Other examples of loanwords are:

• baiskeli = bicycle
• benki = bank
• televisheni = television

So sinki is a normal Swahili word, even though its origin is English.

The sentence is:

• Baada ya kupiga mswaki, = After brushing your teeth,
• tema mate kwenye sinki. = spit saliva into the sink.

So the structure is:

time phrase + command

This is very natural in both Swahili and English.

You could break it down as:

• Baada ya = after
• kupiga mswaki = brushing your teeth
• tema = spit
• mate = saliva
• kwenye sinki = into the sink

It is most naturally singular and fairly direct, because of tema.

That makes it sound like:

• an instruction to one person
• something a parent, teacher, dentist, or caregiver might say

It is not rude by itself; it is just a straightforward command.

If you wanted to make it less direct, you could change the wording, but for instructions this form is completely normal.

Yes. That is a very natural English translation.

Because kupiga mswaki specifically means brush your teeth, the full meaning is clearer as:

• After brushing your teeth, spit into the sink.

But in natural English, if the context is obvious, After brushing, spit in the sink works well too.

The main change would be the imperative verb.

Singular:

• Baada ya kupiga mswaki, tema mate kwenye sinki.

Plural:

• Baada ya kupiga mswaki, temeni mate kwenye sinki.

So:

• tema = spit! (one person)
• temeni = spit! (more than one person)

Everything else can stay the same.