nani and nini: Who and What

Use nani to ask for the identity of a person or people and nini to ask about a thing, action, idea, or unknown content. Both words remain unchanged: there is no noun-class table of different nani and nini forms. Their position and the agreement on nearby verbs still reveal their role.

English moves who and what to the front of many questions and adds do, does, or did. Swahili normally leaves the question word where the answer would appear and keeps the ordinary finite verb. Unless a use is labeled otherwise, the patterns on this page are neutral in current Standard Swahili.

The central contrast

The human demonstrative huyo makes a person salient, so nani asks for that person’s identity. The existential kuna asks about unknown content in the envelope, so nini is appropriate. Neither question word changes to agree with huyo or bahasha.

nani and nini as subjects

When the unknown participant is the subject, the question word normally stands before the verb. The verb still needs a subject marker.

The form amefunga begins with third-person singular human a-. This is the usual agreement when one person’s identity is expected. If the context explicitly expects several people, plural human agreement is possible:

Here group expression akina nani and verbal wa- signal that the expected answer may name several people. Nani itself has not acquired a plural ending. The number information sits in the surrounding construction, not on the question word.

Broad “what happened?” questions often use class 7 ki- agreement with nini:

This ki- belongs to the predicate’s agreement pattern; it is not an ending on nini. Once the answer supplies a specific noun, subsequent verbs follow that noun’s actual class. For example, Chupa imeanguka; imepasuka “A bottle fell; it broke” uses class 9 i- for chupa.

English can keep invariant “it” after discovering the answer. Swahili switches to the correct class agreement: class 9 i- for chupa and class 10 zi- in negative hazi- for sahani.

Objects stay after the verb

Swahili question words are normally in situ: they remain in the position where the answer belongs. Compare an ordinary statement and its question.

Because the unknown object is human, unamtafuta includes human object marker -m-. The full order is u-na-m-tafuta: “you + present + him/her + look for.” The question word follows the verb where the name would stand.

When several people are expected, akina nani can likewise remain after the verb while the plural human object marker -wa- appears inside it:

The unknown thing is not yet identified or classed, so there is no automatic object marker translating English “it.” Once speakers are choosing among known class-specific options, a class-agreeing form of -pi “which one” is often more precise; see the -pi series.

The same in-situ pattern survives in a passive question:

In m-li-elez-w-a, plural “you” is the subject of the passive verb, while nini asks for the content that was communicated. Passive voice changes the participants' grammatical roles, but it does not pull nini to the front.

Copular questions

With the neutral identifying copula ni, nani and nini ask for a label or identity. The order often begins with a known topic.

Short deictic questions are especially frequent:

In the second question, hii and i- present the unknown object through class 9 reference. Nini remains invariant. In the first, human huyu and a- use class 1 agreement. This is how class information survives without changing the question word itself.

Bare patterns such as Nani huyu? or Nini hii? occur in spontaneous reaction (informal) and can sound abrupt, surprised, or challenging. Learners should default to the full neutral forms Huyu ni nani? and Hii ni nini? in ordinary polite interaction.

Standalone Nani? or Nini? can also ask someone to repeat what was said in (informal) conversation, but tone can make either response sound abrupt. With an unfamiliar person, use samahani and a full clause: Samahani, unamtafuta nani? “Excuse me, whom are you looking for?” or Samahani, umesema nini? “Sorry, what did you say?”

A focused identity question

A neutral subject question simply puts nani before the finite verb. When the speaker wants to isolate the person—often from named alternatives—ni nani can be followed by an agreeing relative form. The answer can mirror that focus with ndiye “is the one.”

The first question is broad; the second explicitly narrows the choice. In aliyeniletea (a-li-ye-ni-lete-a), relative marker -ye- links the selected class 1 person to the past action, and -ni- marks “to me.” This focused pattern adds a contrast; it is not required for an ordinary “who?” question.

nani is not “which person,” and nini is not a modifier

Use nani when the identity is open: Ulimwona nani? “Whom did you see?” If a known set is being narrowed, a noun plus gani or a class-agreeing -pi form may be better: mwalimu gani? “which teacher/what kind of teacher?”; yupi? “which class 1 one?”

Likewise, Standard Swahili does not normally place nini after a noun as an invariant modifier modeled on English “what.” Ask gari gani? for “which/what car,” not gari nini. Ask Ni nini? when the object’s identity or nature itself is unknown.

Here gani modifies kozi. The sequence kwa nini is the fixed question “why” (neutral), literally built with kwa plus nini but functioning as a reason question. It should be learned as a separate construction rather than treated as ordinary object nini.

Pro-drop and direct address

The subject marker inside the verb is enough in a neutral question:

An independent pronoun can identify or contrast addressees:

The second version uses wewe and yeye contrastively (emphatic, neutral in register). The verbs still carry u- and a-. English requires overt “you” and “she” in both versions; Swahili normally relies on those bound subject markers unless the free pronouns help manage the conversation.

The same principle applies to answers. Nani amepiga simu? — Amepiga simu Asha is possible, but the most natural short answer is simply Asha. Do not answer every question with yeye plus a repeated noun unless you mean “she, as opposed to someone else.”

Question intonation and je

Word order and the interrogative word already mark these as questions. Rising or focused question intonation helps in speech, but no English-style auxiliary is added. The particle je can introduce a planned or formal question (formal or careful speech), yet it is unnecessary with nani or nini in most everyday exchanges.

In casual conversation, Nani atawasilisha taarifa ya mwisho? is entirely complete (neutral). Overusing je can make every question sound like an interview or questionnaire.

Common Mistakes

Moving the object question word to English sentence-initial position

Omitting the human object marker

Using nini as a noun modifier

Repeating an independent subject pronoun as English requires

Key Takeaways

Nani asks for human identity; nini asks about a thing, event, action, idea, or unknown content. The words themselves do not inflect for noun class, but the finite verb still carries subject and sometimes object agreement. Keep object question words after the verb, use ni in neutral copular questions, and reserve free personal pronouns for real contrast. Once an unknown nonhuman referent is identified, continue with that noun’s own class concord rather than an invariant equivalent of English “it.”