Tafadhali, usiseme kwa sauti kubwa; mtoto analala chumbani.

Tafadhali means please. It is used to make the request polite.

In Swahili, tafadhali can appear at the beginning of the sentence, as it does here, but you may also hear it in other positions depending on style and emphasis. Starting with it is very natural for polite requests.

Usiseme is the negative singular command form of -sema (to say / to speak).

• sema = speak! / say!
• usiseme = don’t speak! / don’t say!

This is a very important Swahili pattern:

• u- = negative marker for a singular command
• -si- = part of the negative structure
• -seme = verb stem in the form used after negation

So usiseme means don’t speak when talking to one person.

If you were talking to more than one person, you would say:

• msiseme = don’t speak (plural)

It can suggest either, depending on context. In this sentence, usiseme kwa sauti kubwa most naturally means:

• don’t speak loudly
• or don’t speak in a loud voice

So even though -sema often means say, it is also commonly used in contexts where English would use speak.

Swahili often uses a phrase where English uses an adverb.

• kwa = by / with / in
• sauti = voice / sound
• kubwa = big / loud

So kwa sauti kubwa literally means something like with a big voice or in a loud voice.

Natural English translation:

• loudly
• in a loud voice

This is a very common Swahili way of expressing manner.

Sauti kubwa literally means big voice or big sound, but idiomatically it means loud voice or loud sound.

So:

• kwa sauti kubwa = loudly
• anaongea kwa sauti kubwa = he/she is speaking loudly

This is one of those places where Swahili uses big where English uses loud.

Mtoto analala breaks down like this:

• mtoto = child
• a- = he/she
• -na- = present / ongoing tense
• -lala = sleep

So analala means he/she is sleeping or sometimes he/she sleeps, depending on context. In this sentence, because of the situation, it clearly means:

• the child is sleeping

Swahili does not have articles like English a/an/the.

So mtoto can mean:

• a child
• the child
• child

The exact meaning depends on context. In this sentence, English naturally uses the child because the child is understood as a specific child in the situation.

Chumbani means in the room.

It comes from:

• chumba = room
• -ni = locative suffix meaning in / at / to

So:

• chumba = room
• chumbani = in the room / at the room

This -ni ending is very common in Swahili for places:

• nyumbani = at home
• shuleni = at school
• mezani = on the table / at the table

Depending on context, chumbani may sometimes be understood as in the bedroom/inside the room.

The semicolon separates the request from the reason:

• Tafadhali, usiseme kwa sauti kubwa = Please don’t speak loudly
• mtoto analala chumbani = the child is sleeping in the room

In English, you could also translate this with:

• because
• a dash
• a period
• or just a pause

So the semicolon here shows a close connection: don’t speak loudly; the child is sleeping in the room.

Yes, sometimes. Chumba simply means room, but in real usage, context may make it clear that it is a bedroom or another specific room.

So mtoto analala chumbani could be understood as:

• the child is sleeping in the room
• the child is sleeping in the bedroom

If the larger context is a house and someone is being asked to be quiet, bedroom may be a very natural interpretation.

Yes, it could be, but it has a slightly different feel.

• usiseme comes from -sema
• usiongee comes from -ongea

Very roughly:

• -sema = say / speak
• -ongea = talk / speak

In many contexts both are possible, but they are not always identical. In this sentence, usiseme kwa sauti kubwa is perfectly natural. Usiongee kwa sauti kubwa would also naturally mean don’t talk loudly.

You would change the singular negative command usiseme to the plural form msiseme:

• Tafadhali, msiseme kwa sauti kubwa; mtoto analala chumbani.

That means:

• Please, don’t speak loudly; the child is sleeping in the room.

So the difference is:

• usiseme = don’t speak! (to one person)
• msiseme = don’t speak! (to more than one person)

The basic word order is very natural, but Swahili does allow some flexibility for emphasis.

This version is straightforward and neutral:

• Tafadhali, usiseme kwa sauti kubwa; mtoto analala chumbani.

You could rearrange parts in some contexts, but this version is the clearest and most standard for a learner. In general:

• command first
• reason after

That matches the logic of the sentence very well.

Swahili pronunciation is generally quite regular.

A few helpful points:

• u-si-se-me: each vowel is pronounced clearly
• kwa sounds roughly like kwah
• sauti has two vowel sounds in sequence: sa-u-ti
• kubwa sounds roughly like koo-bwa or kub-wa, with both consonants heard

Also, Swahili usually has clear, even syllables, so try not to reduce vowels the way English often does.

A rough syllable breakdown:

• Ta-fa-dha-li
• u-si-se-me
• kwa
• sa-u-ti
• ku-bwa
• mto-to
• a-na-la-la
• chu-mba-ni