kuamini — to Believe, Trust | Swahili Grammar

Kuamini means “believe, trust, have faith in.” Its complement determines the relationship: a person object is trusted or believed, a kwamba clause is accepted as true, and katika can introduce a principle, system, or faith commitment. The loan stem amini ends in lexical -i, which remains unchanged in negative and subjunctive forms.

All unlabelled uses below are neutral current Standard Swahili. Religious and institutional uses are labelled where register or context matters.

Practical paradigm: preserve final -i

Form	I	you (sg.)	he/she	we	you (pl.)	they
present	ninaamini	unaamini	anaamini	tunaamini	mnaamini	wanaamini
past	niliamini	uliamini	aliamini	tuliamini	mliamini	waliamini
perfect	nimeamini	umeamini	ameamini	tumeamini	mmeamini	wameamini
future	nitaamini	utaamini	ataamini	tutaamini	mtaamini	wataamini
present negative	siamini	huamini	haamini	hatuamini	hamwamini	hawaamini
past negative	sikuamini	hukuamini	hakuamini	hatukuamini	hamkuamini	hawakuamini
subjunctive	niamini	uamini	aamini	tuamini	mwamini	waamini

The singular imperative is amini and plural is aminini. Loan-final -i remains before plural-address -ni.

Amini uwezo wako, lakini usiogope kuomba msaada.

Believe in your ability, but do not be afraid to ask for help.

Aminini taarifa iliyothibitishwa, si uvumi wa mitandaoni.

Believe verified information, not rumors from social media.

The second has the deliberate force of (formal) public guidance. Segment ni-na-amini, si-amini, ni-amini, and amini-ni. The adjacent vowels belong to separate meaningful slots and remain in Standard spelling.

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Loan amini is fully conjugated by Swahili prefixes but keeps its final vowel: siamini, aamini, aminini.

Trusting or believing a person

With a definite human object, use object marking:

Ninamwamini Asha kwa sababu hutimiza ahadi zake.

I trust Asha because she keeps her promises.

Build: ni-na-mw-amini. Class 1 object marker -m- becomes -mw- before initial a. The statement concerns Asha's reliability, not merely the truth of one sentence.

Tulikuamini uliposema kwamba fedha zilikuwa salama.

We believed you when you said that the money was safe.

Here -ku- indexes singular “you,” and the reported proposition explains what was believed. Context can shade amini mtu toward “trust the person” or “believe what the person says.”

With a pronoun or known person, omitting the human object marker produces nonstandard or highly marked Standard Swahili. English places the person after believe/trust without agreement; Swahili encodes that participant before the stem.

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For a person, look immediately before amini: ninakuamini “I trust you,” ninamwamini “I trust him/her,” tunawaamini “we trust them.”

Believing a proposition

Use kwamba + finite clause for a belief about what is true:

Ninaamini kwamba timu yetu inaweza kumaliza kazi kwa wakati.

I believe that our team can finish the work on time.

Hakuamini kwamba barua hiyo ilikuwa imetumwa wiki iliyopita.

She did not believe that the letter had been sent the previous week.

The embedded clause has its own subject and TAM. In uncomplicated (informal) conversation, kwamba may be omitted:

Siamini amefika mapema hivi leo.

I can't believe she arrived this early today.

Retain kwamba in (formal) prose and whenever omission could blur the clause boundary. Contrast belief with thought: nafikiri kwamba frames an opinion or inference, while naamini kwamba often signals stronger commitment to truth. The distinction is gradual, not absolute; see kufikiri.

Believing in a principle, system, or faith

Kuamini katika presents commitment to a larger principle or domain:

Tunaamini katika usawa wa fursa kwa watoto wote.

We believe in equal opportunity for all children.

This is frequent in neutral and (formal) statements of values. Religious language may use kumwamini Mungu “believe/trust in God” or kuamini katika Mungu “believe in God,” with the first treating God grammatically as a person object and the second framing a faith commitment.

Waumini wanaamini katika rehema na msamaha wa Mungu.

Believers have faith in God's mercy and forgiveness.

These are ordinary religious uses, not figurative extensions. The complement construction determines which facet of belief is foregrounded.

Common collocations include kuamini kabisa “believe completely,” kuamini kwa dhati “believe sincerely,” kujiamini “be self-confident,” and kuaminika “be trustworthy/credible.”

Ripoti hii haiaminiki kwa sababu haina vyanzo vinavyoweza kukaguliwa.

This report is not credible because it has no verifiable sources.

Aminika is an established stative form whose subject is the entity judged believable or trustworthy. Reflexive jiamini puts confidence back on the subject:

Baada ya kufanya mazoezi kwa miezi kadhaa, Rehema anajiamini zaidi jukwaani.

After practicing for several months, Rehema is more confident on stage.

Do not infer that every English derivative of “belief” maps to a mechanically assembled extension; learn the established forms and their argument patterns.

Common Mistakes

Changing loan-final -i in the subjunctive

❌ Ni muhimu uamine uwezo wako.

Incorrect — loan verb amini keeps final -i in the subjunctive.

✅ Ni muhimu uamini uwezo wako unapokabili changamoto.

It is important that you believe in your ability when facing challenges.

Omitting the marker for a definite person

❌ Ninaamini yule wakili kuhusu suala hili.

Incorrect for the normal definite-human pattern — index the lawyer with -mw-.

✅ Ninamwamini yule wakili kwa sababu ana uzoefu mkubwa.

I trust that lawyer because she has extensive experience.

Using an infinitive for a belief proposition

❌ Tunaamini mradi kufanikiwa mwaka huu.

Incorrect proposition frame — use kwamba plus a finite verb.

✅ Tunaamini kwamba mradi utafanikiwa mwaka huu.

We believe that the project will succeed this year.

Adding katika before a person mechanically

❌ Ninaamini katika Amina atatunza siri yangu.

Incorrect person pattern in this intended trust relation — mark Amina as object.

✅ Ninamwamini Amina; hatamwambia mtu yeyote siri yangu.

I trust Amina; she will not tell anyone my secret.

Key Takeaways

Loan amini keeps final -i: siamini, niamini, aminini.
A trusted or believed person is an object and normally triggers human object marking.
A proposition follows kwamba and has its own finite verb.
Kuamini katika foregrounds commitment to a principle, system, or faith.
Established kujiamini means be self-confident; kuaminika means be credible or trustworthy.

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