Ńdẹ́bẹ́A written script for ÌgbòType Ńdébé ↗

The structure of the script

How Ndebe Works

Build a syllable from its parts, read its tone, and see how the numbers fit together.

Syllables

Ńdébé represents syllables. In a consonant–vowel syllable, the stem and radical form the consonant body, and the vowel marker sits on the connecting branch above it. The marker tells you both the vowel and its tone.

There are 6 stems and 7 radicals. Their combinations make 42 consonant bodies. Nine vowels each have three tone forms: high, mid and low, giving 27 vowel markers.

Build bá, one part at a time

Start with the stem for B

Add the radical for B

B body + vowel on top

Add high-tone a: bá

The dotted shapes are teaching placeholders: a tall rectangle for a stem, a small square for a radical, and a horizontal rectangle for a vowel. They show where a component belongs.

The same body, three tones

bá · high

ba · mid

bà · low

A vowel on its own

A vowel that forms its own syllable uses its standalone form. The extra dot beneath distinguishes it from a vowel attached to a consonant body.

Standalone á and á above a body placeholder

Standalone high-tone a

The vowel above a consonant body

Try the teaching composer →

One word, different dialects

The same word can sound different across dialects and still mean exactly the same thing. Use a shared consonant body for the syllable that changes. For example, ụnọ, ụlọ and ụyọ all mean house or building: their alternating consonant uses the N/L/Y body.

A shared body belongs to a known correspondence in a word. It does not mean that its sounds can be exchanged in every word. Use a static body when the consonant stays the same across dialects, as in the hard G of ga, walk.

Each card writes the bold headword in Ńdébé and lists its related pronunciations. Where vowels differ, as in anị and ala, the written example keeps the headword’s vowels.

House / building

ụnọ / ụlọ / ụyọ



ụnọ · High–Low

N/L/Y shared body

Face

iru / ihu



iru · High–High

R/H shared body

Market

afịa / ahịa



afịa · High throughout

F/H/SH shared body

Bush

ọfịa / ọhịa / ọshịa



ọfịa · High throughout

F/H/SH shared body

Head

ịsị / ịshị



ịsị · High–High

S/SH shared body

Working tone

Name

afa / aha



afa · High–Low

F/H/SH shared body

Water

mili / miri



mili · High–Mid

L/R shared body

Earth / ground

anị / ala / ana



anị · Low–Low

N/L/Y shared body

Walk

ga



ga · High

Static G body

War

agha / aya



agha · High–High

Y/GH shared body

Confusion / lawlessness

àghalā / àyalā



aghala · Low–High–Mid

Y/GH shared body

Final L uses the static-form fallback

Deceit

aghụ̀ghọ̀ / awụ̀wọ̀



aghụghọ · High–Low–Low

W/GH shared body

If you are unsure

Look the word up in several dictionaries. If you cannot establish its alternating forms, use the static form of the sound you use in your own pronunciation.

Find the tone too

The consonant is only part of the spelling. Choose the vowel’s tone as well. A dictionary’s step tone uses the Ńdébé Mid form. These examples use working citation tones; tone can change in a phrase.

The tone for ịsị is provisionally taken from a documented isi form. We will refine working examples as more evidence becomes available.

Explore the consonant and vowel charts →

Tone changes meaning

The same consonants and vowels can make different words when their tones change. Here, keep a–kw–a and change only the tones. Listen for both tones when learning each word.

Crying



ákwá · High–High

Cloth



ákwà · High–Low

Egg



àkwá · Low–High

Bed / bridge



àkwà · Low–Low

These are citation forms from the dictionary. Tone can change when a word appears in a phrase.

N / M is Special

N/M can form a syllable without an accompanying vowel. This syllabic nasal carries its own tone and uses one of three standalone forms. It does not go on top of a consonant body like a vowel marker.

Standalone N/M tones

N/M · high

N/M · mid

N/M · low

A nasal can be a syllable: nsi, poison


The first form is a standalone high-tone N/M. The second is si: an S body with high-tone i. There is no extra vowel after the initial n.

These three N/M forms are additional to the 27 vowel markers. When n or m is the consonant of a consonant–vowel syllable, use the appropriate consonant body with its vowel above.

Numbers

Ńdébé numbers use base 20, with a sub-base of 5. There are 20 digits, from 0 to 19. Larger numbers use place value; each place to the left is worth twenty times the one beside it.

Twenty digits from a small set of forms

Within a digit, the body contributes 0–4 and a flag contributes 0, 5, 10 or 15. Adding a flag to the bodies for 1–4 gives 6–9, 11–14 and 16–19. The digits 5, 10 and 15 have a plain body with no extra units.

A flag and a body make one digit

Flag: 5

Body: 1

Complete digit: 6

5 + 1 = 6


0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

Place value beyond nineteen

The places are ones, twenties, four hundreds, eight thousands, and so on. Zero holds an empty place. The examples below give each value in decimal.

20 = 1 × 20 + 0
25 = 1 × 20 + 5
400 = 1 × 400 + 0 × 20 + 0
8,000 = 1 × 203
3 zero places
160,000 = 1 × 204
4 zero places
3,200,000 = 1 × 205
5 zero places

For addition, five body units become a flag worth five. Four such flags make twenty: carry one into the next place. Subtraction reverses these exchanges.

Fractions

The vigesimal point separates whole numbers from fractional places. To its right, the places are twentieths, four-hundredths, eight-thousandths, and so on.

0 whole units + 10 twentieths = ½

Punctuation and elision

Use spaces or the interpunct word separator to separate words. Single and double quotation marks have opening and closing forms.

Nzobe marks vowel elision. In typed text, it comes after the stem and radical and before the surviving vowel. The font combines these into the appropriate form.

nà + ànị̀ → n’ànị̀
 

nà + ànị̀



n’ànị̀ · on the ground

The first a is swallowed. The second, surviving low-tone a carries the nzobe form, showing that it hides the earlier vowel. The final vowel is ị, the dot-below vowel, with low tone.

A full stop ends a sentence. The numeral markers have separate roles: the decimal marker has one low dot, and the vigesimal marker has two low stacked dots. When typing, Period after a numeral inserts the vigesimal marker; use the explicit Full stop control to end a sentence after a number.

See the typing and punctuation guide →