Remaining Swahili Noun Classes

In Brief

Swahili noun classes control agreement: words connected to a noun often carry a matching marker. Classes 5/6 commonly pair a singular noun with a ji- or zero prefix and a plural in ma-; class 11 uses u- and may form a class 10 plural; class 15 turns a verb infinitive in ku- into a noun; and classes 16–18 use pa-, ku-, and mu- to describe location.

Overview

A noun is a word for a person, thing, place, or idea. In Swahili, nouns are grouped into numbered noun classes. These classes work somewhat like grammatical gender in other languages, but there are more groups, and they are not simply masculine and feminine. The class of a noun determines its agreement: the matching forms used on demonstratives, adjectives, possessives, verbs, and some other words.

At B1, classes 5/6, 11/10, 15, and 16–18 complete much of the noun-class system introduced by more frequent patterns such as m-/wa- and ki-/vi-. English usually marks number only on the noun—fruit/fruits—while Swahili repeats class information across the phrase: tunda hili kubwa (“this big fruit”) but matunda haya makubwa (“these big fruits”). Learning a noun with its agreement pattern is therefore more useful than memorizing its prefix alone.

These classes are diverse. Classes 5/6 include many fruits, body parts, mass nouns, and words whose meanings cannot be predicted from shape alone. Class 11 includes long or extended objects and other nouns in u-; related abstract u- nouns are often assigned to class 14 in fuller grammatical descriptions. Class 15 covers infinitives used as verbal nouns, while classes 16–18 express different views of place.

How It Works

The agreement map

The following forms give a practical reference. The “subject marker” appears on a verb whose subject belongs to that class. The adjective marker joins many adjective stems, such as -zuri (“good, beautiful”) and -kubwa (“big”). Demonstratives vary for “this,” “that near you,” and “that over there”; the table shows the common “this/here” form.

Class	Typical noun prefix	Subject marker	Adjective marker	“this / here”	Example
5	ji- or no visible prefix	li-	ji-	hili	tunda hili limeiva
6	ma-	ya-	ma-	haya	matunda haya yameiva
11	u-	u-	m-	huu	ukuta huu mrefu
10	n-/ny- or no added prefix	zi-	n-/ny-	hizi	kuta hizi ndefu
15	ku-	ku-	ku-	huku	kusoma huku kuzuri
16	pa- / place reference	pa-	pa-	hapa	mahali hapa pazuri
17	ku- / general place or direction	ku-	ku-	huku	kule kumetulia
18	mu- / inside a place	mu-	mu-	humu	mle mna watu

Not every adjective displays a class prefix. A number of common borrowed adjectives, including safi (“clean”), remain unchanged: tunda safi, matunda safi. The surrounding demonstrative or verb still reveals the class.

Classes 5 and 6: singular and plural

Class 5 is commonly paired with class 6. Some class 5 nouns visibly begin with ji-: jicho/ macho (“eye/eyes”), jina/majina (“name/names”), and jino/meno (“tooth/teeth”). In many other nouns, the singular has no visible class prefix: tunda/matunda (“fruit/fruits”), gari/magari (“car/cars”), and yai/mayai (“egg/eggs”). Because sound changes and inherited forms can obscure the boundary, memorize the complete singular–plural pair.

Agreement changes throughout the phrase:

• Tunda hili kubwa limeiva — This big fruit has ripened.
• Matunda haya makubwa yameiva — These big fruits have ripened.
• Jina langu jipya — my new name
• Majina yangu mapya — my new names

Class 6 is not only a plural. Some nouns occur mainly or only in ma- and refer to liquids, substances, collections, or paired ideas: maji (“water”), mafuta (“oil/fat”), maziwa (“milk”), and maisha (“life”). They take class 6 agreement even when English uses a singular or uncountable noun: Maji haya ni baridi (“This water is cold”).

Class 11 and its class 10 plurals

Many class 11 nouns begin with u- and take u- subject agreement, huu as the near demonstrative, and frequently m- on an adjective:

• ukuta huu mrefu — this tall wall
• ulimi huu mrefu — this long tongue
• wimbo huu mzuri — this good song

The noun prefix may appear as w- before a vowel, as in wimbo. When a class 11 noun has a countable plural, that plural commonly uses class 10 agreement. The surface form is not always produced by simply removing u- and adding one fixed prefix:

Singular (class 11)	Plural (class 10)	Meaning
ukuta	kuta	wall(s)
ulimi	ndimi	tongue(s)
wimbo	nyimbo	song(s)
ufunguo	funguo	key(s)

Thus ukuta huu ni mrefu becomes kuta hizi ni ndefu. The plural adjective ndefu has class 10 nasal agreement, not class 11 mrefu.

Many nouns beginning in u- describe qualities or abstract ideas, such as uzuri (“beauty”) and utoto (“childhood”). Traditional descriptions usually place these in class 14 rather than class 11, although both classes share much of the singular u- agreement. Most abstract nouns have no ordinary plural. This distinction matters in advanced analysis, but the practical first step is the same: learn that u- nouns generally trigger singular u- agreement and check whether a particular noun has a class 10 plural.

Class 15: infinitives as nouns

The infinitive is the basic “to …” form of a verb, such as kusoma (“to read”) or kuogelea (“to swim”). In Swahili, the whole infinitive belongs to class 15 and can function as a verbal noun—an action treated as a thing or activity.

• Kusoma ni kuzuri. — Reading is good.
• Kuogelea kunachosha. — Swimming is tiring.
• Kupika kwake kunavutia. — His or her cooking is appealing.

The infinitive itself already contains the class prefix ku-. When it is the subject, the finite verb takes class 15 subject agreement ku-: Kusafiri kunahitaji pesa (“Travelling requires money”). Possessives also agree: kuimba kwangu (“my singing”), kucheza kwake (“his/her playing”).

Do not confuse infinitival ku- with the second-person singular object marker -ku- (“you”) or the locative class 17 marker. Their positions and functions differ, even though they sound alike.

Classes 16–18: three ways to locate something

The locative classes frame a place from different perspectives:

• Class 16, pa-: a definite or specific spot—roughly “at this place.” Hapa means “here,” and pale means “there at that spot.”
• Class 17, ku-: a general area, location, or direction—roughly “around/to/from there.” Huku means “around here/on this side,” and kule means “over there.”
• Class 18, mu-: the interior of a place—“inside.” Humu means “in here,” and mle means “in there.”

The contrast is about how the speaker presents the location, not always three objectively different places. Compare hapa (“right here/at this spot”), huku (“around here/this way”), and humu (“in here”).

A common noun that directly takes class 16 agreement is mahali (“place”): Mahali hapa ni pazuri. Ordinary place nouns can also become locative expressions with -ni: nyumbani (“at home”), shuleni (“at school”), mezani (“on/at the table”), and mfukoni (“in the pocket”). Their agreement may use pa-, ku-, or mu- depending on whether the intended focus is a spot, a general location, or an interior.

Locative subject markers often appear in existence statements:

• Hapa pana kelele. — There is noise here.
• Kule kuna soko. — There is a market over there.
• Mfukoni mna pesa. — There is money in the pocket.

Here pana, kuna, and mna combine a locative subject marker with -na (“have/be with”), producing the practical meaning “there is/are.”

Examples in Context

Swahili	English	Note
Tunda hili ni kubwa.	This fruit is big.	Class 5: hili, kubwa
Matunda haya ni mazuri.	These fruits are good.	Class 6 plural agreement
Jicho langu linauma.	My eye hurts.	Class 5 verb marker li-
Macho yangu yanauma.	My eyes hurt.	Class 6 verb marker ya-
Maji haya ni baridi.	This water is cold.	Class 6 noun without a singular counterpart
Ukuta huu ni mrefu.	This wall is tall.	Class 11 agreement
Kuta hizi ni ndefu.	These walls are tall.	Class 10 agreement
Wimbo huu umependwa sana.	This song has been liked very much.	Class 11 subject marker u-
Nyimbo hizi zimependwa sana.	These songs have been liked very much.	Class 10 subject marker zi-
Kusoma ni kuzuri.	Reading is good.	Class 15 verbal noun
Kujifunza Kiswahili kunahitaji mazoezi.	Learning Swahili requires practice.	Class 15 subject marker ku-
Kuimba kwake kunafurahisha.	His or her singing is delightful.	Class 15 possessive kwake
Mahali hapa ni pazuri.	This place is nice.	Class 16 agreement
Kule kuna duka jipya.	There is a new shop over there.	Class 17 general location
Chumbani mna kitanda.	There is a bed in the room.	Class 18 interior location

Common Mistakes

Using class 5 agreement with a class 6 plural

• Wrong: Matunda hili ni kubwa.
• Right: Matunda haya ni makubwa.
• Why: Matunda is class 6, so both the demonstrative and adjective must use class 6 forms.

Assuming every class 5 singular begins with ji-

• Wrong: jitunda / matunda
• Right: tunda / matunda
• Why: Many class 5 nouns have no visible singular prefix. Learn tunda as a whole word rather than adding ji- mechanically.

Giving every u- noun the same predictable plural

• Wrong: ukuta / nyukuta
• Right: ukuta / kuta
• Why: Class 11 plurals show several surface patterns. Memorize pairs such as ukuta/kuta, ulimi/ndimi, and wimbo/nyimbo.

Using human subject agreement for an infinitive

• Wrong: Kusoma anahitaji muda.
• Right: Kusoma kunahitaji muda.
• Why: Kusoma is a class 15 subject, so the following verb takes ku-, not the class 1 human marker a-.

Treating hapa, huku, and humu as interchangeable

• Wrong: Humu kuna watu when you specifically mean “inside here.”
• Right: Humu mna watu.
• Why: Interior class 18 normally calls for mu- agreement. Class 17 ku- presents a broader location, while class 16 pa- points to a spot.

Usage Notes

Noun classes are grammatical categories, not rigid meaning labels. It is useful to associate class 5/6 with many fruits and class 11 with some long objects, but meaning alone cannot reliably predict a noun’s class. Loanwords also enter different classes according to established usage. Let the plural and agreement forms confirm the class.

In everyday Swahili, some agreement choices vary, especially with borrowed adjectives and locative constructions. Speakers may also choose a locative class according to perspective rather than physical geometry. A room can be treated as a general location with ku- or as an interior with mu-; the latter makes “inside” more prominent.

English often uses it, there, or a preposition where Swahili uses a class marker. Avoid translating one word at a time. In Kule kuna soko, the sequence kule kuna works together to mean “there is a market over there”; kuna is not merely a standalone equivalent of English there is in every context.

Beyond the Basics / Advanced Use

The class 5/6 pair can have expressive uses. Prefixes associated with noun classes may help derive words with augmentative or collective overtones, but these formations are lexical and context-sensitive. Do not assume that adding ji- or ma- to any noun automatically creates a natural augmentative. Learn established words from reliable examples.

The label “class 11/14” differs across teaching materials because both classes commonly show u- in the noun and overlapping singular agreement. The main practical contrast is that canonical class 11 nouns may have class 10 plurals, while class 14 abstract or mass nouns are usually uncountable. Compare countable wimbo/nyimbo (“song/songs”) with abstract uzuri (“beauty”), which does not normally form an everyday plural.

Infinitives retain verbal abilities even when the whole phrase functions as a class 15 noun. They can take an object or other complement: Kusoma vitabu kila siku kunasaidia (“Reading books every day helps”). Here kusoma vitabu kila siku is a complete activity phrase, and the main verb kunasaidia still agrees with that activity as class 15.

Locatives can also take possessives: pangu (“at my place/my spot”), kwangu (“at my place/to me”), and mwangu (“inside mine”), although the exact English translation depends heavily on context. You will also encounter locative relative forms such as palipo, kuliko, and mlimo. These combine location-class agreement with relative-clause grammar and are best studied after the basic pa-/ku-/mu- contrast is secure.

Practice Tips

1. Build noun-family cards, not single-word cards. Record tunda—matunda—hili/haya—kubwa/makubwa or ukuta—kuta—huu/hizi—mrefu/ndefu. This trains the agreement chain at the same time as vocabulary.
2. Turn actions into subjects. Choose five familiar verbs and make sentences such as Kupika kunafurahisha or Kutembea ni kuzuri. Check that the main predicate carries class 15 ku- agreement.
3. Describe one place three ways. While standing in a room, contrast hapa (this exact spot), huku (around here), and humu (inside here). Add an existence statement with pana, kuna, or mna.

Related Concepts

• Prerequisite: Noun Class 7/8: Ki-/Vi- (Things/Tools) — introduces the same idea of class-based singular/plural agreement with a more regular pair.
• Next step: Advanced Noun Derivation (U-/Ma-/Ki- Abstract) — explores how noun prefixes derive abstract, collective, and manner meanings.