Writing Balance Rule: The top component should be compact and crown-like, while the bottom box-like structure (母) widens slightly to provide stable visual footing.
Airflow Tactile Test: No puff of air. Tissue remains still (sounds like English 't' in 'stop').
Tongue & Mouth Position: Tongue tip touches the alveolar ridge behind upper front teeth.
Final Rhyme
u
Vowel Group: -u vowel group
Sounds like: oo sound in 'boot'
Mouth Shape Guide: Pronounce as standalone vowel 'oo'.
Common Learner Trap: Keep vowel quality steady across all 4 tone contours.
Tone
T2 (35)
3 → 5 (35)
2nd Tone (Mid-Rising)
Tone Pitch & Cadence: Tone 2 rises from mid to high (35), exactly like asking a surprised question in English: 'What?' or 'Really?'
Sandhi: When followed by another Tone 2 syllable, it undergoes normal tonal adjustments, but standalone it maintains a sharp rising pitch.
👂
Listening trap: Confusing the rising Tone 2 (dú) with Tone 4 (dù), which drops sharply. Ensure your pitch climbs upward.
👋
Physical Tone Gesture: Make a quick upward slash with your index finger starting from the chest and pointing up and away, matching the rising tone pitch.
3. Writing
Topology: Top-bottom · Strokes: 8 strokes
Writing Balance Rule: The top component should be compact and crown-like, while the bottom box-like structure (母) widens slightly to provide stable visual footing.
4. Components
Radical母 · Mother Radical (mother, female)
Semantic Clue (形旁):母 (Provides structural base and conceptual link to nurturing turned harmful)
Visualize a sprouting plant or bulb (𠂉 over 龶) above a mother (母), symbolizing that a mother's medicine can turn into deadly poison if mishandled.
龶 Upper crown representing a plant shoot or bulb
母 Mother or base container
Phonetic Family (形声字家族)
8· Phonetic Root: 母 (mǔ)
5. History
Liushu category: Phono-semantic (形声)
Origin: Originally depicted harmful herbal concoctions or venomous substances derived from plants, later combining elements representing a source (mother) that brews danger.
Semantic Evolution: Shifted from specific herbal toxins to general poison, and further metaphorically to cruel, malicious behavior or addictive drugs.
Ancient Chinese pharmacopeia often noted that many medicinal herbs were also potent poisons if the dosage was incorrect.
6. Sinosphere
🇻🇳
Sino-Vietnamese
độc
Corresponds to the heavy glottal stop (nặng) tone in Vietnamese.
🇯🇵
Kanji (Japanese)
On: ドク
🇰🇷
Hanja (Korean)
독
Sound Shift Bridge: The dental stop 'd' and vowel 'u' maintain close acoustic parallels across East Asian historical loans.
7. Memory
Vivid Mnemonic Story
A mother (母) prepares a bitter herbal brew from a toxic plant bulb (upper crown), but she accidentally adds too much, turning the medicine into a deadly poison (dú).
Phonetic Family (形声字家族)
毒
dúpoisonBase character for toxicity.
餹
tángsugarUses similar structural elements but refers to sweet treats.
Lookalikes & Traps (形近字)
每(měi)
‘每’ means 'every' and lacks the top plant/bulb crown that ‘毒’ wears.
8. Mastery
Active Recall Challenge
这条蛇非常有[___]。
Clue: dú
Common Learner Pitfall
Confusing the upper crown of ‘毒’ with the character ‘每’ (měi), leading to writing errors.
Memory Prompts
Recognition: When you see the character 毒, what English meaning and tone come to mind?
Production: How do you write the character for 'poison' (dú) with 8 strokes?
Real-World Video Context
Watch authentic native speakers pronounce and explain this word in real-world YouTube videos.
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毒dúpoison
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