ไม่ดี
mâi-diiMeanings
1AdjectiveA1
not good; bad; poor (quality/condition)
not good in quality, condition, result, or situation; bad, poor, undesirable; can also imply inauspicious.
Examples
อากาศaa-gàatอากาศaa-gàat1air2weatherวันนี้wan-níiวันนี้wan-níi1today (time of speech)2today; this day3nowadays; at presentไม่ดีmâi-diiไม่ดีmâi-dii1not good; bad; poor (quality/condition)2improper; immoral3not well; unwell; not okay4badly; poorlyเลยləəiเลยləəi1at all; whatsoever (often in negatives)2so; thus; then (immediate result)3completely; absolutely (emphasis)4[to] pass; go beyond; exceed
The weather today is not good at all.
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The quality of this phone is not good.
My exam results were not as good as I had thought.
สัญญาณsǎn-yaanอินเทอร์เน็ตin-təə-nétที่tîiหอพักhɔ̌ɔ-pákไม่ดีmâi-diiดูหนังduu-nǎngแล้วlɛ́ɛoกระตุกgrà-dtùkตลอดdtà-lɔ̀ɔt
The internet signal at the dorm is bad; the movie keeps lagging when I watch it.
2AdjectiveA2
improper; immoral
describing behavior or character as improper, indecent, or morally wrong (e.g., ประพฤติไม่ดี); can sound judgmental/derogatory about people.
Examples
เขาkǎoเขาkǎo1he; him2she; her3they; them (context-dependent)4horn5mountain; hillเป็นbpenเป็นbpen1to be (identity/category/state)2to become3[to] know how; be able to (skill)4alive; living5[to] have; suffer from; be in (a condition)คนkonคนkon1person; human2classifier: people3[to] stir; mix by stirringไม่ดีmâi-diiไม่ดีmâi-dii1not good; bad; poor (quality/condition)2improper; immoral3not well; unwell; not okay4badly; poorlyอย่าyàaอย่าyàadon’t; do not (negative imperative)ไปbpaiไปbpai1[to] go2away; off (directional complement/particle)3on; onward; continuously (aspect marker)4(aspect) completed; already past5too; excessivelyยุ่งyûngยุ่งyûng1busy; occupied2messy; tangled3complicated; troublesome4[to] meddle; interfere5swarming with flies/mosquitoes (dial.)กับgàpกับgàp1with; together with2and (informal)3side dish; accompaniment4against; versus5to; toward (recipient/target)6classifier: sets/pairs (spoon and fork)เขาkǎoเขาkǎo1he; him2she; her3they; them (context-dependent)4horn5mountain; hill
He is a bad person. Don't get involved with him.
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Stealing is a bad thing.
อย่าyàaไปbpaiคบkópกับgàpคนkonนั้นnánเลยləəiเขาkǎoเป็นbpenคนkonไม่ดีmâi-diiชอบchɔ̂ɔpเอาเปรียบao-bprìiapเพื่อนpʉ̂ʉan
Don't hang out with that person. He's not a good person; he likes to take advantage of friends.
That child behaves so badly that no one wants to play with them.
3AdjectiveA2
not well; unwell; not okay
describing a physical or emotional state as not well or not okay (e.g., รู้สึกไม่ดี); also used for conditions like อาการไม่ดี.
Examples
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He isn't feeling well today, so he requested sick leave.
คุณยายkun-yaaiดูduuอาการaa-gaanไม่ดีmâi-diiตั้งแต่dtâng-dtɛ̀ɛเมื่อวานmʉ̂ʉa-waanควรkuuanพาpaaไปหาหมอbpai-hǎa-mɔ̌ɔนะná
Grandma hasn't seemed well since yesterday. We should take her to the doctor.
หลังจากlǎng-jàakได้ยินdâi-yinข่าวร้ายkàao-ráaiเขาkǎoก็gɔ̂รู้สึกrúu-sʉ̀kไม่ดีmâi-diiขึ้นมาkʉ̂n-maaทันทีtan-tiiและlɛ́หน้าซีดnâa-sîitไปเลยbpai-ləəi
After hearing the bad news, he immediately felt unwell and his face turned pale.
4AdverbA2
badly; poorly
in a poor or substandard manner (e.g., ทำไม่ดี, พูดไม่ดี).
Examples
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I did the exam poorly yesterday.
เขาkǎoพูดpûutภาษาอังกฤษpaa-sǎa-ang-grìtไม่ดีmâi-diiแต่dtɛ̀ɛเขาkǎoก็gɔ̂พยายามpá-yaa-yaamสื่อสารsʉ̀ʉ-sǎan
He speaks English poorly, but he tries to communicate.
ถ้าtâaเราraoวางแผนwaang-pɛ̌ɛnไม่ดีmâi-diiตั้งdtângแต่แรกdtɛ̀ɛ-rɛ̂ɛkโครงการkroong-gaanก็gɔ̂อาจจะàat-jàล้มเหลวlóm-lěeoได้dâai
If we plan poorly from the beginning, the project could fail.
Tones
See how the spelling sets each syllable's tone, step by step.
2 syllables · pick one to see its rule
How the tone is decided
- Consonant classLow class
- Tone markMai ek
- Syllable endingLive syllableNot needed here: the tone mark decides.
Low class consonants
คฅฆงชซฌญฑฒณทธนพฟภมยรลวฬฮ
Result
Falling tone
mâi
Starts high, rises a little, then drops clearly.
Low class + Mai ek → Falling
Tone chart
Every class and spelling pattern, with this syllable outlined.
| Mid class | High class | Low class | |
|---|---|---|---|
| No mark + live | Mid | Rising | Mid |
| No mark + dead short | Low | Low | High |
| No mark + dead long | Low | Low | Falling |
| Mai ek | Low | Low | Falling |
| Mai tho | Falling | Falling | High |
| Mai tri | High | — | — |
| Mai chattawa | Rising | — | — |
Word Breakdown
+
ไม่ดีmâi-diiไม่ดีmâi-diinot good; bad; poor (quality/condition)not good; bad; poor (quality/condition)Word