Noun Class 9/10: N- (Animals/Borrowed Words) in Swahili

Overview

Noun Class 9/10 is one of the largest and most diverse classes in Swahili. At the CEFR A1 level, learners encounter it constantly because it includes animals, many borrowed words from Arabic and English, and numerous everyday nouns. The distinctive feature of this class is that singular and plural forms are often identical, with only context and agreement markers distinguishing number.

The class is called the "N-class" because many nouns carry a nasal prefix (n-, m-, ny-, or ng'-), though many others have no visible prefix at all. Examples include nyumba (house/houses), ndege (bird/birds/airplane/airplanes), and borrowed words like simu (phone/phones), basi (bus/buses).

Understanding Class 9/10 agreement is essential because so many common vocabulary items belong here, and the identical singular/plural forms mean learners must rely on agreement markers to convey number.

How It Works

Noun Formation

Singular (Class 9)	Plural (Class 10)	Meaning
nyumba	nyumba	house/houses
ndege	ndege	bird(s) / airplane(s)
nguo	nguo	clothing/clothes
simba	simba	lion/lions
simu	simu	phone/phones
basi	basi	bus/buses
safari	safari	journey/journeys
habari	habari	news (same sg/pl)

Agreement Patterns

Category	Class 9 (sg.)	Class 10 (pl.)
Subject prefix	i-	zi-
Adjective prefix	n-/- (nasal)	n-/- (nasal)
Possessive connector	ya	za
Demonstrative (this)	hii	hizi
Demonstrative (that)	hiyo	hizo
Demonstrative (far)	ile	zile

Nasal Prefix on Adjectives

Adjectives in class 9/10 take a nasal prefix that assimilates to the following consonant:

Root	Class 9/10 Form	Meaning
-zuri	nzuri	good/nice
-kubwa	kubwa	big (no change)
-pya	mpya	new
-refu	ndefu	long/tall

Examples in Context

Swahili	English	Note
Nyumba hii ni nzuri.	This house is nice.	Singular: hii, ya
Nyumba hizi ni nzuri.	These houses are nice.	Plural: hizi, za
Ndege anaimba.	The bird is singing.	Class 9 can use a- for animate
Nguo zangu ni mpya.	My clothes are new.	"zangu" = class 10 possessive
Simba ni mnyama mkubwa.	A lion is a big animal.	Simba in class 9
Safari yetu ilikuwa nzuri.	Our journey was good.	"yetu" = class 9 possessive
Simu yangu imepotea.	My phone is lost.	Borrowed word, class 9
Habari za leo ni nzuri.	Today's news is good.	"za" = class 10 connector
Nyoka ile ni hatari.	That snake is dangerous.	"ile" = distant demonstrative
Nguo hizi ni za watoto.	These clothes are for children.	"hizi" + "za"

Common Mistakes

Using wrong possessive connector

• Wrong: Nyumba changu (my house — using class 7 connector)
• Right: Nyumba yangu
• Why: Class 9 uses "ya" as possessive connector, not "cha" (class 7).

Forgetting number changes in agreement

• Wrong: Nyumba hii ni nzuri when meaning "these houses"
• Right: Nyumba hizi ni nzuri (These houses are nice.)
• Why: Since the noun form is identical, you must change demonstratives and other markers to indicate plural.

Wrong subject prefix

• Wrong: Simu unalia. (The phone u-rings — using class 3 prefix)
• Right: Simu inalia. (The phone is ringing.)
• Why: Class 9 uses i- as subject prefix.

Assuming all animals use class 9 verb agreement for animate

• Wrong: Consistently using a-/wa- for all animal nouns
• Right: Animals in class 9/10 usually take i-/zi- but sometimes a-/wa- when personified
• Why: While some speakers use animate agreement for animals, the standard class 9/10 prefixes i-/zi- are always safe.

Usage Notes

Class 9/10 is the "default" class for borrowed words in Swahili. New words entering the language from English, Arabic, or other sources typically land here: kompyuta (computer), televisheni (television), baisikeli (bicycle). This makes it a constantly growing class.

In some regional varieties, there is variation in whether animal nouns take animate (a-/wa-) or inanimate (i-/zi-) verb agreement. Standard Swahili generally uses i-/zi- for animals.

Practice Tips

1. Singular/plural contrast: Write five sentences with class 9 nouns, then rewrite them in plural, changing only the agreement markers while keeping the noun the same. This highlights how agreement carries the number information.
2. Borrowed word collection: Make a list of English or Arabic words you know that Swahili has borrowed (simu, basi, kompyuta, etc.) and practice them with class 9/10 agreement.
3. Animal vocabulary building: Learn animal names and practice them in sentences with correct class 9/10 agreement patterns.

Related Concepts

• Next steps: Animals — build animal vocabulary while practicing class 9/10 agreement patterns