Negation (Ha-/-i) in Swahili

In Brief

To make most present-tense Swahili verbs negative, replace the affirmative subject prefix and -na- with a negative subject prefix, then change the verb's final -a to -i: ninasoma (“I am reading”) becomes sisomi (“I am not reading/I do not read”). The six main prefixes are si-, hu-, ha-, hatu-, ham-, hawa-.

Overview

Swahili usually builds a verb by joining several meaningful pieces into one word. In ninasoma, ni- identifies the subject (the person doing the action) as “I,” -na- marks the present tense, and -soma expresses “read.” Negation is therefore not normally made by placing a separate word equivalent to English “not” before the verb. Instead, the verb itself changes.

This is a core A1 pattern because it lets you say what someone does not do, does not want, cannot do, or is not doing. English distinguishes “I do not read” from “I am not reading,” but the basic Swahili negative present can cover either meaning. The surrounding situation usually makes the intended meaning clear.

The beginner rule applies most directly to verbs whose dictionary form ends in -a, such as kusoma (“to read”), kupenda (“to like”), and kufanya (“to do”). A few common verbs and verbs borrowed from other languages behave differently; they are separated in the advanced section.

How It Works

The basic pattern

For an ordinary -a verb, use:

negative subject prefix + verb stem with final -i

A verb stem is the central part carrying the verb's meaning. For example, the stem of kusoma is soma. In a negative present form, soma becomes somi.

Compare the affirmative and negative structures:

Meaning	Affirmative present	Negative present
I read / am reading	ni-na-som-a	si-som-i
we like / are liking	tu-na-pend-a	hatu-pend-i

Two changes happen together:

1. The affirmative subject prefix and -na- disappear and are replaced by the appropriate negative subject prefix.
2. The final -a changes to -i.

Do not keep -na- in this basic negative present pattern.

Negative subject prefixes

Person	Affirmative prefix	Negative prefix	Negative form of kusoma	Meaning
I	ni-	si-	sisomi	I do not read / I am not reading
you (singular)	u-	hu-	husomi	you do not read / you are not reading
he/she	a-	ha-	hasomi	he/she does not read / is not reading
we	tu-	hatu-	hatusomi	we do not read / are not reading
you (plural)	m-	ham-	hamsomi	you all do not read / are not reading
they	wa-	hawa-	hawasomi	they do not read / are not reading

Swahili subject pronouns such as mimi (“I”) and wao (“they”) are usually unnecessary because the prefix already identifies the subject. Use them when you need contrast or emphasis: Mimi sisomi, lakini yeye anasoma means “I am not reading, but he/she is.”

Step-by-step formation

Take kupenda (“to like”):

1. Remove the infinitive prefix ku- to find penda.
2. Choose the negative subject prefix, for example hatu- for “we do not.”
3. Change final -a to -i: penda → pendi.
4. Join the pieces: hatu + pendi → hatupendi.

The same process gives hafanyi from kufanya (“to do/work”): ha- + fany-i. The spelling fanyi follows directly from changing the last vowel; no extra negative word is needed.

Objects stay inside the verb

An object is the person or thing affected by the action. If the verb includes an object marker, that marker remains between the negative subject prefix and the stem:

• Ninakupenda. — “I love you.”
• Sikupendi. — “I do not love you.”

Here -ku- means “you” as the object. It is not the infinitive prefix ku-, even though the two look alike. Similarly, Hatuwaoni means “We do not see them”: hatu- (we do not) + -wa- (them) + on-i (see).

Negating ability and another following verb

With a verb such as kuweza (“to be able”), negate the first, conjugated verb. A following infinitive stays unchanged:

• Unaweza kwenda. — “You can go.”
• Huwezi kwenda. — “You cannot go.”

The final -a of weza changes to -i, producing wezi. The following kwenda remains an infinitive (“to go”).

Examples in Context

Swahili	English	Note
Sisomi kitabu.	I am not reading a book.	First-person singular; soma → somi
Hunywi kahawa asubuhi.	You do not drink coffee in the morning.	Singular “you”; common verb kunywa
Hafanyi kazi leo.	He/She is not working today.	Third-person singular
Hatupendi chai.	We do not like tea.	First-person plural
Hamsemi Kiswahili darasani.	You all are not speaking Swahili in class.	Plural “you”
Hawaishi hapa.	They do not live here.	Third-person plural
Sikupendi.	I do not love you.	-ku- is the object “you”
Hatuwaoni watoto.	We do not see the children.	-wa- refers to the children
Huwezi kwenda sasa.	You cannot go now.	The following infinitive is unchanged
Hataki chakula.	He/She does not want food.	Common verb kutaka
Hawaji leo.	They are not coming today.	Irregular common form from kuja
Mimi sili nyama.	I do not eat meat.	Emphatic mimi; negative of kula
Kitabu hakitoshi.	The book is not enough.	A noun-class subject, not a person

The translations show how context controls the English wording. Hawaishi hapa is naturally habitual (“They do not live here”), while Hafanyi kazi leo refers to a temporary situation (“He/She is not working today”). Swahili uses the same negative-present framework for both.

Common Mistakes

Keeping -na- in the negative present

• Wrong: Sinasoma kitabu.
• Right: Sisomi kitabu.
• Why: In the basic negative present, -na- is removed. Use si- plus som-i.

Leaving the final -a unchanged

• Wrong: Hatupenda chai.
• Right: Hatupendi chai.
• Why: With an ordinary -a verb, the final vowel changes from -a to -i.

Adding a separate word for English “not”

• Wrong: Si ninasoma.
• Right: Sisomi.
• Why: A finite verb (a verb marked for its subject and tense) carries negation inside its own form. The standalone si has other uses, especially in sentences meaning “is not,” but it does not simply go before ninasoma.

Using ha- for every subject

• Wrong: Hasomi for “I do not read.”
• Right: Sisomi.
• Why: The negative prefix must agree with the subject. Ha- is the human third-person singular form; “I do not” requires si-.

Changing the following infinitive

• Wrong: Huwezi huendi for “You cannot go.”
• Right: Huwezi kwenda.
• Why: Only kuweza is the conjugated verb here. Kwenda remains the infinitive after it.

Applying the final-vowel rule mechanically to every loanword

• Wrong: Sijibi swali.
• Right: Sijibu swali. — “I am not answering the question.”
• Why: Many borrowed verbs already ending in -i, -u, or -e keep that final vowel in the negative present. Learn this as an advanced extension of the core rule.

Usage Notes

The negative present often corresponds to both English do not + verb and am/is/are not + -ing. Swahili does not need the English auxiliary verbs “do” or “be” in these forms:

• Sisomi magazeti. — “I do not read newspapers.”
• Sisomi sasa. — “I am not reading now.”

Time expressions such as kila siku (“every day”), sasa (“now”), and leo (“today”) clarify whether the meaning is general or happening at the moment.

In careful writing, join all parts of the verb into one word: hatupendi, not hatu pendi. Stress normally falls near the end of a Swahili word, so hearing the whole form as one unit can also improve pronunciation and recognition.

English speakers sometimes expect an explicit pronoun because English requires “I,” “you,” or “they.” Swahili normally does not. Hawaji is already a complete sentence meaning “They are not coming.”

Beyond the Basics / Advanced Use

You do not need to master every pattern below at A1, but these points explain forms you will meet early in real Swahili.

Common short and irregular-looking verbs

Some very common verbs do not look as transparent as kusoma in the negative present:

Infinitive	Negative example	Meaning
kula	sili	I do not eat / I am not eating
kuja	haji	he/she is not coming
kwenda	hatuendi	we are not going
kunywa	hamnywi	you all are not drinking

These forms still use the negative subject prefixes and typically end in -i, but their stems undergo changes that are best learned through complete examples rather than by guessing.

Verbs that do not end in -a

Many borrowed verbs retain their existing final vowel. For example, kujibu (“to answer”) gives sijibu (“I do not answer”), and kusafiri (“to travel”) gives hasafiri (“he/she does not travel”). The negative prefix changes, but there is no final -a to replace.

Noun-class subjects

The six-person table covers human speakers and groups, but Swahili agreement also follows noun classes (groups of nouns that control matching prefixes). With a thing as the subject, the negative prefix depends on its class:

• Kitabu hakitoshi. — “The book is not enough.”
• Vitabu havitoshi. — “The books are not enough.”
• Maji hayatoshi. — “The water is not enough.”

Here kitabu, vitabu, and maji trigger different agreement. This is not random; it belongs to the wider noun-class system.

Not every kind of negation uses this exact pattern

The ha-/-i system taught here is specifically the basic present negative. Past, future, perfect, commands, relative constructions, and “not yet” use other markers or structures. Also, identity and description can use a copular negative such as si: Mimi si daktari means “I am not a doctor.” Do not force sisomi-style formation onto every sentence containing English “not.”

Practice Tips

1. Transform complete pairs. Say ninasoma → sisomi, unapenda → hupendi, and wanafanya → hawafanyi. Practising the loss of -na- and the change -a → -i together prevents half-formed negatives.
2. Cycle one verb through all six persons. Use a familiar verb such as kusoma: sisomi, husomi, hasomi, hatusomi, hamsomi, hawasomi. Then repeat with kupenda or kufanya.
3. Add a time clue. Make pairs such as Sisomi sasa (“I am not reading now”) and Sisomi magazeti (“I do not read newspapers”). This trains you to interpret the same Swahili form as either current or general according to context.

Related Concepts

• Prerequisite: Present Tense (-na-) — compare affirmative forms with their negative counterparts and see why -na- disappears.