B1 Morphology 1 min read Medium

Vowel Harmony in Extensions

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Grammar Rule in 30 Seconds

Swahili verb extensions like '-i-' or '-e-' change their vowel to match the root's last vowel.

  • If the root ends in 'a', 'i', or 'u', use '-i-' (e.g., piga -> pigia).
  • If the root ends in 'e' or 'o', use '-e-' (e.g., soma -> somea).
  • The vowel 'a' is neutral and does not trigger the change.
Root (Vowel X) + Extension (Vowel X) + a

Applicative Vowel Harmony

Root Ending Suffix Example Meaning
a
-i-
pigia
hit for
i
-i-
imbia
sing for
u
-i-
fungulia
open for
e
-e-
letea
bring for
o
-e-
somea
read for

Meanings

Vowel harmony ensures that suffixes added to verbs (extensions) match the phonetic quality of the verb root.

1

Applicative Extension

Indicates doing an action for someone or toward something.

“Anisomee kitabu”

“Anipikie chai”

Reference Table

Reference table for Vowel Harmony in Extensions
Form Structure Example
Affirmative
Root + Ext + a
Anipikie
Negative
Si + Root + Ext + i
Hanipikii
Question
Je, + Root + Ext + a?
Je, anipikie?
Reflexive
ji + Root + Ext + a
Jipikie
Past
li + Root + Ext + a
Alinipikia
Future
ta + Root + Ext + a
Atanipikia

Formality Spectrum

Formal
Tafadhali nipikie chakula.

Tafadhali nipikie chakula. (Dining)

Neutral
Nipikie chakula.

Nipikie chakula. (Dining)

Informal
Nipikie.

Nipikie. (Dining)

Slang
Nipikie basi!

Nipikie basi! (Dining)

Vowel Harmony Groups

Root Endings

Group I (Use -i-)

  • a, i, u a, i, u

Group II (Use -e-)

  • e, o e, o

Examples by Level

1

Nipikie chai.

Cook tea for me.

2

Nisomee kitabu.

Read the book for me.

3

Aninunulie mkate.

He buys bread for me.

4

Anipigie simu.

He calls me.

1

Tafadhali nifungulie mlango.

Please open the door for me.

2

Ananiletea zawadi.

He is bringing me a gift.

3

Wamejengea nyumba.

They built a house for themselves.

4

Usiniambie uongo.

Don't tell me lies.

1

Mwalimu anatusomea hadithi.

The teacher is reading us a story.

2

Alinipikia chakula kitamu.

She cooked me delicious food.

3

Tafadhali nionyeshe njia.

Please show me the way.

4

Ananipendea tabia zangu.

He likes me because of my behavior.

1

Amemwandikia barua ya malalamiko.

He has written him a letter of complaint.

2

Wamekubaliana kuhusu bei.

They have agreed on the price.

3

Ananitafutia kazi nzuri.

He is looking for a good job for me.

4

Mvua imetuharibia sherehe.

The rain ruined our party.

1

Amejitolea kutusaidia.

He has volunteered to help us.

2

Hatuwezi kuelewana kwa lugha hii.

We cannot understand each other in this language.

3

Ananiondolea shaka zangu.

He is removing my doubts.

4

Wamejipangia ratiba mpya.

They have arranged a new schedule for themselves.

1

Amemkumbushia ahadi yake.

He reminded him of his promise.

2

Ananivutia kwa ufasaha wake.

He attracts me with his fluency.

3

Wamejipatia umaarufu mkubwa.

They have gained great fame for themselves.

4

Ananitendea haki.

He is treating me fairly.

Easily Confused

Vowel Harmony in Extensions vs Causative vs Applicative

Both use vowel harmony and look similar.

Vowel Harmony in Extensions vs Neutral vs Applicative

Learners forget to add the extension.

Vowel Harmony in Extensions vs Vowel Harmony Groups

Mixing up 'i' and 'e' groups.

Common Mistakes

✗

somia

✓

somea

Root ends in 'o', must use 'e'.
✗

letei

✓

letea

Root ends in 'e', must use 'e'.
✗

pigea

✓

pigia

Root ends in 'a', must use 'i'.
✗

funguea

✓

fungulia

Root ends in 'u', must use 'i'.
✗

pigea

✓

pigia

Root ends in 'a'.
✗

somia

✓

somea

Root ends in 'o'.
✗

letei

✓

letea

Root ends in 'e'.
✗

pigea

✓

pigia

Root ends in 'a'.
✗

somia

✓

somea

Root ends in 'o'.
✗

letei

✓

letea

Root ends in 'e'.
✗

pigea

✓

pigia

Root ends in 'a'.
✗

somia

✓

somea

Root ends in 'o'.
✗

letei

✓

letea

Root ends in 'e'.

Sentence Patterns

Naomba ___ ___.

Yeye ___ ___ kwa ajili yangu.

Je, ___ ___ chakula?

___ ___ ni nzuri sana.

Real World Usage

Ordering food very common

Nipikie wali.

Texting constant

Nipigie simu.

Job interview occasional

Nimejipangia malengo.

Travel common

Nionyeshe njia.

Classroom very common

Nisomee kitabu.

Social media common

Ananipendea picha.

💡

Check the root

Always look at the last vowel of the root before adding any extension.
⚠️

Don't guess

If you aren't sure, check a dictionary for the root's final vowel.
🎯

Listen to the rhythm

Native speakers use harmony to keep the rhythm. If it sounds clunky, you probably have the wrong vowel.
💬

Use it to be polite

Adding the applicative suffix is a great way to sound more polite and native.

Smart Tips

Default to '-i-' for the extension.

pigea → pigia

Always use '-e-' for the extension.

somia → somea

Always use '-e-' for the extension.

letei → letea

Default to '-i-' for the extension.

fungulea → fungulia

Pronunciation

pi-gi-a

Vowel length

Ensure the vowel in the extension is clear and distinct.

Request

Nipikie? ↗

Polite request

Memorize It

Mnemonic

A, I, U love the letter I; E and O prefer the letter E.

Visual Association

Imagine a party where vowels are guests. A, I, and U are wearing 'I' hats. E and O are wearing 'E' hats. They only dance with partners wearing the same hat.

Rhyme

If the root ends in A, I, or U, add an I to make it true. If it ends in E or O, use an E and watch it go.

Story

Juma wanted to cook (pika). He added an 'i' because 'a' is in the first group. Now he has 'pigia'. Then he wanted to read (soma). He saw the 'o' and knew he needed an 'e'. Now he has 'somea'.

Word Web

pigapigiasomasomealetaleteafunguafungulia

Challenge

Write 5 sentences using the applicative form for verbs ending in different vowels.

Cultural Notes

Using the correct applicative is seen as a sign of respect, especially when talking to elders.

In urban slang, people sometimes drop the applicative, but it's considered poor grammar.

Coastal speakers are very precise with vowel harmony.

Derived from Proto-Bantu applicative suffixes.

Conversation Starters

“

Je, unaweza kunipikia chakula?

“

Unaweza kunisomea ujumbe huu?

“

Nani anayekuletea zawadi?

“

Je, umewahi kujipikia chakula cha mchana?

Journal Prompts

Write about a time someone did something for you.
Describe how you help your family.
Explain why vowel harmony is important in Swahili.
Discuss the difference between causative and applicative.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Test Yourself

Fill in the correct applicative suffix.

Piga -> Pigi___

✓ Correct! ✗ Not quite. Correct answer: b
Root ends in 'a', so use 'i'.
Choose the correct form. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Root ends in 'o', so use 'e'.
Fix the mistake. Error Correction

Find and fix the mistake:

Anipigie simu.

✓ Correct! ✗ Not quite. Correct answer: b
Already correct.
Change to applicative. Sentence Transformation

Anapika chakula -> Ananipikia chakula.

✓ Correct! ✗ Not quite. Correct answer: a
Correct applicative form.
Match the root to the extension. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: a
Piga uses i, Soma uses e.
Fill in the blank.

Ananilete___ zawadi.

✓ Correct! ✗ Not quite. Correct answer: c
Root ends in 'e', so use 'e'.
Choose the correct form. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Root ends in 'u', so use 'i'.
Build a sentence. Sentence Building

Nipikie / chakula / tafadhali.

✓ Correct! ✗ Not quite. Correct answer: a
Natural word order.

Score: /8

Practice Exercises

8 exercises
Fill in the correct applicative suffix.

Piga -> Pigi___

✓ Correct! ✗ Not quite. Correct answer: b
Root ends in 'a', so use 'i'.
Choose the correct form. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Root ends in 'o', so use 'e'.
Fix the mistake. Error Correction

Find and fix the mistake:

Anipigie simu.

✓ Correct! ✗ Not quite. Correct answer: b
Already correct.
Change to applicative. Sentence Transformation

Anapika chakula -> Ananipikia chakula.

✓ Correct! ✗ Not quite. Correct answer: a
Correct applicative form.
Match the root to the extension. Match Pairs

Piga / Soma

✓ Correct! ✗ Not quite. Correct answer: a
Piga uses i, Soma uses e.
Fill in the blank.

Ananilete___ zawadi.

✓ Correct! ✗ Not quite. Correct answer: c
Root ends in 'e', so use 'e'.
Choose the correct form. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Root ends in 'u', so use 'i'.
Build a sentence. Sentence Building

Nipikie / chakula / tafadhali.

✓ Correct! ✗ Not quite. Correct answer: a
Natural word order.

Score: /8

FAQ (8)

It helps maintain the phonetic rhythm of the language.

Most verbs follow this, but some irregular ones don't.

Yes, but it's less natural.

Use '-i-'.

Use '-e-'.

It takes practice, but it's very logical.

Rarely, it's very ingrained.

Yes, some loanwords behave differently.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish low

Indirect object pronouns

Swahili uses verb morphology; Spanish uses syntax.

French low

Prepositional phrases

Swahili incorporates the beneficiary into the verb.

German low

Dative case

Swahili uses suffixation.

Japanese moderate

Benefactive verbs (kureru/morau)

Swahili uses suffixes.

Arabic low

Prepositional prefixes

Swahili uses suffixes.

Chinese none

Prepositional phrases

Swahili uses internal verb modification.

Learning Path

Prerequisites

Previous
The Applicative Extension -ia/-ea

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