Swahili adjectives are one of the clearest demonstrations of the noun class system at work. Unlike English, where a single word "good" is used with any noun ("good person," "good books," "good water"), Swahili requires every adjective to take a prefix that agrees with the class of the noun it modifies. The adjective stem stays the same, but the prefix changes to mark concord.
Complicating this tidy picture is the fact that not all Swahili adjectives actually inflect. The native Bantu adjectives - a small but extremely common set including -zuri (good), -baya (bad), -kubwa (big), -dogo (small) - take full concordial prefixes. The many Arabic and other loanword adjectives - safi (clean), rahisi (easy), ghali (expensive), muhimu (important), tayari (ready) - are invariable and never take prefixes. Recognizing which category an adjective belongs to is essential.
This reference covers the full system: the core Bantu adjective stems, their concord prefixes for all major noun classes, the loanword adjectives that stay invariable, comparison and superlative constructions, color terms (which mix both patterns), and adjective placement in the noun phrase. Tables give full agreement paradigms and worked examples for each class.
The Core Bantu Adjective Stems
These stems take concord prefixes and are among the most frequently used words in Swahili.
| Stem | Meaning |
|---|---|
| -zuri | good, nice, beautiful |
| -baya | bad |
| -kubwa | big, large |
| -dogo | small, little |
| -refu | long, tall |
| -fupi | short |
| -pya | new |
| -kuu | great, main |
| -ema | good (moral) |
| -ovu | evil, wicked |
| -zee | old (of persons) |
| -eupe | white |
| -eusi | black |
| -ekundu | red |
| -ingi | many, much |
| -chache | few, little |
| -gumu | hard, difficult |
| -epesi | easy, light |
| -nono | fat |
| -embamba | thin |
The hyphen in each form indicates that a concord prefix must be added. "-zuri" alone is not a word. You must say "mzuri," "wazuri," "kizuri," etc., depending on context.
Agreement Prefixes by Class
The adjective prefix usually matches the noun prefix, but there are some predictable modifications.
| Class | Example Noun | Adjective Prefix | Example Adjective |
|---|---|---|---|
| 1 | mtu (person) | m- / mw- | mzuri, mwema |
| 2 | watu (people) | wa- / w- | wazuri, wema |
| 3 | mti (tree) | m- / mw- | mkubwa, mwema |
| 4 | miti (trees) | mi- / my- | mikubwa, myema |
| 5 | jicho (eye) | - / j- | zuri, jema |
| 6 | macho (eyes) | ma- / me- | mazuri, mema |
| 7 | kitabu (book) | ki- / ch- | kizuri, chema |
| 8 | vitabu (books) | vi- / vy- | vizuri, vyema |
| 9 | nyumba (house) | n- / ny- | nzuri, njema |
| 10 | nyumba (houses) | n- / ny- | nzuri, njema |
| 11 | ukuta (wall) | m- / mw- | mkubwa, mwema |
| 14 | uhuru (freedom) | m- / mw- | mkubwa, mwema |
| 15 | kusoma (reading) | ku- / kw- | kuzuri, kwema |
| 16 (location) | pa- | pazuri | |
| 17 (location) | ku- | kuzuri | |
| 18 (location) | m- | mzuri |
Note on classes 11 and 14: their adjective prefixes are m- (like class 1), not u- (like the noun prefix). This is one of the asymmetries learners must memorize.
Full Agreement Example: -zuri (good)
| Class | Form | Example |
|---|---|---|
| 1 | mzuri | mtu mzuri (a good person) |
| 2 | wazuri | watu wazuri (good people) |
| 3 | mzuri | mti mzuri (a good tree) |
| 4 | mizuri | miti mizuri (good trees) |
| 5 | zuri | jina zuri (a good name) |
| 6 | mazuri | majina mazuri (good names) |
| 7 | kizuri | kitabu kizuri (a good book) |
| 8 | vizuri | vitabu vizuri (good books) |
| 9 | nzuri | nyumba nzuri (a good house) |
| 10 | nzuri | nyumba nzuri (good houses) |
| 11 | mzuri | uzuri mzuri (good beauty - rare) |
| 15 | kuzuri | kusoma kuzuri (good reading) |
Note the N- class effects: before z-, the prefix n- fuses into nz-. Before other consonants, similar modifications apply:
- -refu (long) + n- = ndefu
- -dogo (small) + n- = ndogo
- -baya (bad) + n- = mbaya (because n- before b- becomes m-)
- -pya (new) + n- = mpya
| Class 9/10 adjective | Stem | Underlying | Surface |
|---|---|---|---|
| a long road | -refu | n-refu | ndefu |
| a small car | -dogo | n-dogo | ndogo |
| a new house | -pya | n-pya | mpya |
| a bad news | -baya | n-baya | mbaya |
| a good house | -zuri | n-zuri | nzuri |
Invariable Loanword Adjectives
A large number of commonly used adjectives are Arabic loanwords that never take prefixes. They stand alone in every context.
| Adjective | Meaning | Origin |
|---|---|---|
| safi | clean | Arabic |
| rahisi | easy, cheap | Arabic |
| ghali | expensive | Arabic |
| muhimu | important | Arabic |
| tayari | ready | Arabic |
| hodari | diligent, brave | Arabic |
| maskini | poor | Arabic |
| tajiri | rich | Arabic |
| hasidi | envious | Arabic |
| shujaa | heroic | Arabic |
| tele | plenty | Arabic |
| kila | every | Arabic |
| fulani | a certain (one) | Arabic |
Examples:
- mtu safi (a clean person)
- watu safi (clean people - no prefix change)
- kitabu safi (a clean book)
- nyumba safi (a clean house)
- uhuru muhimu (important freedom)
- marafiki tajiri (rich friends)
The same word "safi" is used for every class. No agreement. No prefix. This is a boon for learners - these adjectives are essentially free once you learn them.
Color Terms
Colors mix the two patterns. Three primary colors are native Bantu and inflect:
| Color | Stem | Notes |
|---|---|---|
| white | -eupe | from -eupe (white, light) |
| black | -eusi | from -eusi (black, dark) |
| red | -ekundu | from -ekundu (red) |
Most other colors are Arabic or English loans and do not inflect:
| Color | Swahili | Origin |
|---|---|---|
| blue | bluu | English |
| green | kijani | Bantu (literally "leafy") |
| yellow | njano | Bantu (from turmeric) |
| brown | rangi ya udongo | lit. "earth color" |
| pink | waridi | Arabic (via "rose") |
| orange | rangi ya chungwa | lit. "orange color" |
| grey | kijivu | Bantu (from "ash") |
| purple | zambarau | Swahili |
Examples with the inflecting colors:
- mtu mweupe (a white person) - note m + eupe = mweupe
- kitabu cheupe (a white book) - ki + eupe becomes cheupe
- nyumba nyeupe (a white house) - n + eupe = nyeupe
- macho meusi (black eyes)
- gari jekundu (a red car) - class 5, ji + ekundu = jekundu
Examples with invariable colors:
- kitabu bluu (a blue book)
- nyumba bluu (a blue house)
- mti kijani (a green tree)
Comparison: Positive, Comparative, Superlative
Swahili does not have morphological comparison (no "-er" or "-est"). Comparison is expressed through constructions using "kuliko" (more than), "zaidi" (more), or "kama" (like).
Comparative:
- Juma ni mrefu kuliko Maria. (Juma is taller than Maria.)
- Kitabu hiki ni kizuri kuliko kile. (This book is better than that one.)
- Nyumba yangu ni ndogo kuliko yako. (My house is smaller than yours.)
Superlative (most):
- Juma ni mrefu zaidi wa wote. (Juma is the tallest of all.)
- Kitabu hiki ni kizuri zaidi. (This book is the best.)
"Kama" is used for comparisons of equality:
- Yeye ni mrefu kama mimi. (He is as tall as I.)
- Chakula hiki ni kitamu kama kile. (This food is as tasty as that.)
Adjective Placement
Swahili adjectives follow the noun they modify. This is consistent across all Bantu languages and differs from English, where adjectives normally precede the noun.
- mtu mzuri (good person) - noun then adjective
- watoto wadogo watano (five small children) - noun, adjective, numeral
- kitabu changu kipya kile (that new book of mine) - noun, possessive, adjective, demonstrative
The typical order within a noun phrase is:
- Noun
- Possessive
- Adjective(s)
- Demonstrative
- Numeral
This order is fairly flexible and emphasis can change it, but it is the default.
Using Adjectives as Adverbs
Some adjectives can be adverbialized by adding the class 7 or class 8 prefix plus the adjective stem, often creating the adverb with "-zuri" giving "vizuri" (well), "-dogo" giving "kidogo" (a little), and so on.
- kidogo (a little, a bit)
- vizuri (well)
- vibaya (badly)
- kidogo tu (just a little)
- vizuri sana (very well)
These forms do not agree with anything - they function as adverbs modifying verbs.
Common Mistakes English Speakers Make
1. Forgetting to inflect Bantu adjectives. Saying "watu mzuri" is wrong; it should be "watu wazuri." The adjective must agree with the noun class of the noun it modifies.
2. Trying to inflect invariable adjectives. Saying "watu wasafi" is non-standard (though occasionally heard); the correct form is "watu safi." Safi is invariable.
3. Placing adjectives before nouns. "Mzuri mtu" is word-order wrong. Swahili is noun-adjective: "mtu mzuri."
4. Using comparative suffixes. English-minded learners sometimes attempt "mrefurer" or "mrefu zaidi-est." Swahili uses phrases ("mrefu kuliko X") not suffixes.
5. Leaving the N- fusion unmade. Writing "mpya" as "npya" or "nzuri" as "n-zuri" misses the automatic phonological fusion. The n- + b- = mb-, n- + p- = mp-, n- + z- stays nz- etc.
Quick Reference
| Category | Behavior |
|---|---|
| Native Bantu adjectives | Inflect with class prefix (-zuri, -baya, -dogo, -kubwa, etc.) |
| Arabic loanword adjectives | Invariable (safi, rahisi, ghali, muhimu, etc.) |
| Colors (white, black, red) | Inflect (-eupe, -eusi, -ekundu) |
| Other colors | Usually invariable (bluu, kijani, njano) |
| Comparison | Phrasal with kuliko, zaidi, kama |
| Word order | Noun before adjective |
| N- class fusion | n+b=mb, n+p=mp, n+z=nz, n+d=nd, n+vowel=ny |
FAQ
How do I know whether an adjective inflects?
The rule of thumb: native Bantu adjectives inflect, Arabic loanwords do not. Dictionaries mark inflecting stems with a leading hyphen (-zuri). If you see "safi" written without a hyphen, it does not inflect.
Why do classes 11 and 14 use m- for adjectives when the noun prefix is u-?
This is a historical oddity of Bantu morphology. Classes 11 and 14 share adjective agreement patterns with class 1 even though their noun prefixes differ. You must memorize this as an exception.
What about when two adjectives modify the same noun?
Each adjective takes its own agreement. "Kitabu kizuri kikubwa kipya" (a good big new book) has ki- three times, once per adjective, plus on the noun itself.
Are there adjectives that can behave both ways?
Some Arabic loanwords have been "Bantuized" over time and may appear with or without prefixes in different registers. "-tamu" (sweet, tasty) is Arabic in origin but inflects in modern Swahili (mtamu, vitamu).
Why is "-pya" written "mpya" in class 1 and 3 but "mpya" in class 9?
Because both m- (class 1/3 noun-adjective prefix) and n- (class 9 adjective prefix before a labial) result in the same surface form "mpya." Context tells you which class it is.
Can I just ignore concord and be understood?
You will be understood for basic communication, but it will sound very foreign. Concord is so central to Swahili that children master it by age three or four. Getting concord right is what separates a tourist-level speaker from a learner who is genuinely engaging with the grammar.
Why do some adverbs look like class 7 adjectives?
Because they literally are: "vizuri" (well) is the class 8 (vi-) form of -zuri. Many Swahili adverbs are formed this way, treating an action as a "way of doing something" that belongs grammatically to class 7 or 8.
See Also
- Swahili Noun Classes
- Swahili Pronouns: Subject, Object, Possessive
- Swahili Numbers and Counting
- Swahili Verb Conjugation and Tense Markers
- Swahili Arabic Loanwords
- Swahili Alphabet and Pronunciation
- Grammatical Cases Compared
- Language Difficulty for English Speakers
Frequently Asked Questions
How do I know whether an adjective inflects?
Native Bantu adjectives inflect; Arabic loanwords generally do not. Dictionaries mark inflecting stems with a leading hyphen (-zuri). If an adjective is written without a hyphen (safi, rahisi), it is invariable.
Why do classes 11 and 14 use m- for adjectives when the noun prefix is u-?
This is a historical oddity of Bantu morphology. Classes 11 and 14 share adjective agreement with class 1 even though their noun prefixes differ. It must be memorized as an exception.
What if two adjectives modify the same noun?
Each adjective takes its own agreement. Kitabu kizuri kikubwa kipya (a good big new book) has ki- three times, once per adjective, in addition to on the noun itself.
Are there adjectives that behave both ways?
Some Arabic loanwords have been Bantuized over time and may appear with or without prefixes. -tamu (sweet, tasty) is Arabic in origin but inflects in modern Swahili (mtamu, vitamu).
Can I just ignore concord and be understood?
You will be understood for basic needs, but your speech will sound very foreign. Concord is central to Swahili and is mastered by native-speaking children by age three or four. Getting it right is what separates tourist-level speech from genuine engagement with the grammar.
Why do some adverbs look like class 7 or 8 adjectives?
Because they literally are. Vizuri (well) is the class 8 (vi-) form of -zuri. Many Swahili adverbs are formed this way, treating an action as a 'way of doing something' that grammatically belongs to class 7 or 8.
Why is -pya written mpya in both class 1 and class 9?
Because both m- (class 1 adjective prefix) and n- (class 9 adjective prefix before a labial) surface as m before p-. The underlying forms differ but the surface form is identical. Context tells you which class is intended.
