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タイ語の丁寧語の語気助詞 (`khrap` & `kha`)

Using khrap and kha at the end of sentences is the essential way to show respect in Thai.
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Grammar Rule in 30 Seconds

Mid-class consonants are the foundation of Thai; they naturally carry a mid-tone when no tone mark is present.

  • Mid-class consonants (ก, จ, ด, ต, บ, ป, อ) have no inherent tone bias.
  • When a mid-class consonant starts a syllable with no tone mark, it is always a mid-tone.
  • Mid-class consonants are the only group that can take all four tone marks to produce all five tones.
Mid-Class Consonant + Vowel = Mid Tone (Flat)

Overview

概要
タイ語の文末に付く小さな音に気づいたことはありますか？これらは「語気助詞」と呼ばれ、丁寧さを表す重要な要素です。今日は khrap と kha について学びます。これを使うだけで、ぐっと丁寧で親しみやすい印象になります。

Meanings

Mid-class consonants serve as the 'neutral' baseline for Thai tones, allowing for the full range of tonal expression.

1

Baseline Tone

The natural, flat pitch used for mid-class consonants without tone markers.

“กา (gaa)”

“จา (jaa)”

Mid-Class Consonant Tones

Consonant Tone Mark Resulting Tone
ก None Mid
ก ่ Low
ก ้ Falling
ก ๊ High
ก ๋ Rising

Reference Table

Reference table for タイ語の丁寧語の語気助詞 (`khrap` & `kha`)
Gender Particle Tone
Male khrap Polite
Female kha Polite

フォーマル度スペクトル

フォーマル
ดิฉันต้องการไป

ดิฉันต้องการไป (Daily life)

ニュートラル
ฉันอยากไป

ฉันอยากไป (Daily life)

カジュアル
อยากไป

อยากไป (Daily life)

スラング
ไปดิ

ไปดิ (Daily life)

Thai Politeness Particles

Politeness

Male

  • khrap polite particle

Female

  • kha polite particle

Gender Particles

Male
khrap polite
Female
kha polite

Which particle to use?

1

Are you male?

YES
Use khrap
NO
Use kha

Usage Context

✅

When to add

  • • End of greeting
  • • End of thanks
  • • End of questions
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Examples by Level

1

กา

crow

2

ดู

to watch

3

ไป

to go

4

จา

part of a name

1

กินข้าว

eat rice

2

บ้าน

house

3

ตาก

to dry

4

อ่าง

basin

1

กางเกง

pants

2

จดหมาย

letter

3

ดารา

star/celebrity

4

ปลา

fish

1

กังวล

worried

2

จัดการ

to manage

3

ตกลง

to agree

4

ปฏิบัติ

to practice

1

กตัญญู

grateful

2

จินตนาการ

imagination

3

ดุลยภาพ

equilibrium

4

อุตสาหกรรม

industry

1

กาลเวลา

time

2

จารึก

inscription

3

ดารดาษ

abundant

4

อภิปราย

to debate

Easily Confused

Polite Particles in Thai (`khrap` & `kha`) 対 High-Class vs Mid-Class

Both can take tone marks, but they have different base tones.

Polite Particles in Thai (`khrap` & `kha`) 対 Low-Class vs Mid-Class

Low-class consonants have a different tone system.

Polite Particles in Thai (`khrap` & `kha`) 対 Tone Marks

Thinking marks change the consonant class.

よくある間違い

✗

Rising pitch on mid-class

✓

Flat pitch

Beginners often add a question-like rise.
✗

Confusing ก with ค

✓

ก is mid, ค is low

Visual similarity.
✗

Adding tone marks where none exist

✓

Read as written

Overthinking.
✗

Ignoring vowel length

✓

Match vowel length

Vowel length affects tone.
✗

Treating all consonants as mid-class

✓

Identify class first

Assuming all letters behave the same.
✗

Mispronouncing 'อ'

✓

Neutral mid-tone

Treating it as a vowel.
✗

Ignoring tone marks

✓

Apply tone mark rules

Failing to see the mark.
✗

Incorrect tone in fast speech

✓

Maintain flat pitch

Tone flattening in speed.
✗

Confusing mid-class with high-class

✓

Memorize the list

Class confusion.
✗

Misapplying tone rules to dead syllables

✓

Use dead syllable rules

Applying live syllable rules.
✗

Over-emphasizing tones

✓

Natural flow

Stilted speech.
✗

Ignoring register shifts

✓

Adjust to context

Formal vs informal.
✗

Misinterpreting historical tone shifts

✓

Use modern standard

Academic confusion.
✗

Inconsistent tone in compound words

✓

Follow compound rules

Treating as separate words.

Sentence Patterns

ฉัน ___ (verb) ___ (object).

___ (subject) ___ (verb) ___ (place).

ถ้า ___ (subject) ___ (verb), ___ (result).

การ ___ (verb) ___ (object) เป็นเรื่อง ___ (adjective).

Real World Usage

Ordering food constant

เอาข้าวผัดครับ

Texting very common

ไปไหน

Job interview common

ดิฉันต้องการงาน

Travel common

ไปที่ไหน

Social media very common

ดูนี่สิ

Food delivery app common

สั่งอาหาร

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🎯

Listen to locals

Watch Thai dramas on Netflix and count how often they use these particles!
💬

It's about respect

Using these shows you respect the person you are talking to.
💡

Don't overthink it

It's just a habit. Say it enough times, and it becomes automatic.

Smart Tips

Check if the first letter is a mid-class consonant.

Guessing the tone. → Identifying the class and applying the rule.

Use a mirror to check your mouth position.

Mumbling. → Clear articulation.

Focus on the mid-tone first.

Slurring. → Clear mid-tone.

Identify the syllable structure.

Reading word by word. → Reading by syllable.

発音

IPA: [gaː]

Mid-Tone

Keep the pitch flat and level.

Flat

ก-า

Neutral statement

Memorize It

Mnemonic

Remember the mid-class group by the phrase: 'Go-Jai-Dta-Ba-Pa-Or'.

Visual Association

Imagine a flat, level horizon line. The mid-class consonants are like little birds sitting perfectly still on that flat line.

Rhyme

Mid-class is flat, like a welcome mat.

Story

A chicken (ก) and a turtle (ต) are sitting on a flat, level board (mid-tone). They are joined by a ball (บ) and a plate (ป). They are all perfectly balanced because they are mid-class.

Word Web

กจดตบปอ

チャレンジ

Find 5 words in a Thai dictionary that start with these letters and say them aloud in a flat tone.

文化メモ

Standard Thai pronunciation is based on the Bangkok dialect.

Tones may vary slightly in pitch.

Faster speech, tones are often compressed.

Mid-class consonants derive from Proto-Tai voiceless stops.

Conversation Starters

“

คุณชื่ออะไร?

“

คุณกินข้าวหรือยัง?

“

คุณดูหนังเรื่องนี้ไหม?

“

คุณไปที่นั่นอย่างไร?

Journal Prompts

Write about your day using 5 words starting with mid-class consonants.
Describe your favorite food using mid-class consonants.
Explain why you are learning Thai.
Discuss the importance of tone in Thai.
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Test Yourself

Fill in the blank for a male speaker.

Sawasdee _____

✓ Correct! ✗ Not quite. Correct answer: khrap
Male speakers use khrap to be polite.
Which is correct for a female speaker? 選択問題

Choose the polite form:

✓ Correct! ✗ Not quite. Correct answer: Khop khun kha
Female speakers use kha.
Fix the mistake for a male speaker. Error Correction

Find and fix the mistake:

Chai kha

✓ Correct! ✗ Not quite. Correct answer: Chai khrap
A male speaker must use khrap.

Score: /3

練習問題

8 exercises
Fill in the correct consonant.

___ า (crow)

✓ Correct! ✗ Not quite. Correct answer: ก
ก is the mid-class consonant for crow.
Which is a mid-class consonant? 選択問題

Which letter is mid-class?

✓ Correct! ✗ Not quite. Correct answer: ก
ก is one of the 9 mid-class consonants.
Correct the tone. Error Correction

Find and fix the mistake:

กา (rising pitch)

✓ Correct! ✗ Not quite. Correct answer: Flat
Mid-class without marks is flat.
Change to negative. Sentence Transformation

ฉันไป (I go)

✓ Correct! ✗ Not quite. Correct answer: ฉันไม่ไป
ไม่ goes before the verb.
Is this true? True False Rule

Mid-class consonants can take all 5 tones.

✓ Correct! ✗ Not quite. Correct answer: True
Yes, they are the most flexible.
Complete the dialogue. Dialogue Completion

A: ไปไหม? B: ___

✓ Correct! ✗ Not quite. Correct answer: ไป
Simple affirmative.
Order the words. Sentence Building

ไป / ฉัน / บ้าน

✓ Correct! ✗ Not quite. Correct answer: ฉันไปบ้าน
Subject-Verb-Object.
Match the word to its class. Match Pairs

Match ก to class.

✓ Correct! ✗ Not quite. Correct answer: Mid
ก is mid-class.

Score: /8

Practice Bank

3 exercises
Fill in the blank. 穴埋め問題

Khop khun _____ (female speaker)

✓ Correct! ✗ Not quite. Correct answer: kha
Select the correct particle. 選択問題

Which one is for males?

✓ Correct! ✗ Not quite. Correct answer: khrap
Correct the particle. Error Correction

Sawasdee khrap (female speaker)

✓ Correct! ✗ Not quite. Correct answer: Sawasdee kha

Score: /3

よくある質問 (8)

There are 9: ก, จ, ฎ, ฏ, ด, ต, บ, ป, อ.

Because they produce a mid-tone when no tone mark is present.

Yes, they are the only class that can take all 5 tones.

Yes, they are used in all registers.

You will get the tone wrong. Memorize the 9 letters.

The core rule is standard, but dialects vary in pitch.

Listen to native speakers and repeat the flat mid-tone.

It is the easiest part of Thai pronunciation.

Sign up free to practice

In Other Languages

Spanish low

None

Spanish uses stress; Thai uses pitch.

French low

None

French intonation is not phonemic.

German low

None

German pitch does not change word meaning.

Japanese moderate

Pitch accent

Japanese pitch is word-based; Thai is syllable-based.

Arabic low

None

Arabic diacritics are for pronunciation, not pitch.

Chinese high

Tones

Chinese tones are different in number and rules.

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タイ語の5つの声調（音楽的な言語）
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タイ語の丁寧語 (`krap`/`ka`)

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