Tunaepuka matumizi yasiyo ya lazima.

Tunaepuka can be split like this:

• tu- = we
• -na- = present / ongoing / habitual time marker
• epuka = avoid

So Tunaepuka means we avoid, we are avoiding, or sometimes we do avoid, depending on context.

Because Swahili usually builds the subject and tense directly into the verb.

In English, you often need separate words:

• we are avoiding

In Swahili, one verb can carry all that information:

• tu-na-epuka

So Swahili does not need a separate standalone word for are here.

Matumizi is a noun related to the verb -tumia, which means to use.

Depending on context, matumizi can mean:

• use
• usage
• consumption
• expenditure

In this sentence, it most naturally means use or usage.

So the phrase is talking about avoiding use that is not necessary.

Grammatically, matumizi belongs to noun class 6, which often has ma- nouns and usually takes agreement forms that look plural.

That is why later words agree with it using ya-.

But in meaning, matumizi is often treated like a mass or abstract noun in English, so it may be translated simply as use rather than uses.

So:

• grammatically in Swahili: class 6
• naturally in English: often singular or uncountable, like use/usage

Yasiyo means something like that are not or which are not, and it agrees with matumizi.

It is a negative descriptive form attached to the noun:

• matumizi yasiyo... = uses/usage that are not...

So in this sentence, yasiyo helps describe matumizi as not necessary.

They do two different jobs.

• In yasiyo, the ya- is part of the agreement with matumizi.
• In ya lazima, ya is a connector meaning something like of, also agreeing with matumizi.

So:

• yasiyo = that are not
• ya lazima = of necessity / necessary

Together:

• matumizi yasiyo ya lazima = use that is not necessary = unnecessary use

Lazima is related to the idea of necessity.

Depending on context, it can mean:

• necessary
• required
• must
• necessarily

In this sentence, it is part of ya lazima, which means necessary or literally of necessity.

So yasiyo ya lazima means not necessary.

Swahili often expresses ideas like this with a descriptive phrase rather than a single adjective.

Instead of one word exactly matching English unnecessary, Swahili commonly uses a structure like:

• yasiyo ya lazima
• literally: that are not of necessity

This is very normal Swahili style. English often prefers one-word adjectives; Swahili often prefers agreement-based descriptive phrases.

Yes. The word order is very normal for Swahili.

A rough structure is:

• Tunaepuka = verb
• matumizi = noun/object
• yasiyo ya lazima = description of that noun

Swahili usually puts descriptive material after the noun it describes. So:

• matumizi yasiyo ya lazima
• literally: use/usage that is not necessary

That is why the description comes after matumizi, not before it as in English unnecessary use.

Yes.

The tense marker -na- often covers both:

• simple present: we avoid
• present progressive: we are avoiding

Which one sounds best in English depends on context.

So this sentence could be understood as:

• We avoid unnecessary use or
• We are avoiding unnecessary use

Both are possible translations.