Writing Balance Rule: The left radical (阝) should be slightly narrower and compressed, leaving ample room for the complex right component (急 variant structure without the heart).
Simplification Logic: Simplified from 隱 to 隐 by streamlining the right-hand side component while retaining the left-hand hill/mound radical.
1. Meaning
secret, hidden, concealed
latentimplicitcrypto-
Adjective / Bound FormFormal / LiteraryBound morpheme#mystery#location#abstract states
Sample Usage
隐形
yǐnxíng
invisible / stealth
隐瞒
yǐnmán
to conceal / to hide (the truth)
2. Sound
/[in²¹⁴]/Tone: 214
隐
yǐnyin3
|
++
ˇ(214)
=yǐn
Initial Consonant
y
Type: Palatal Glide (Zero Initial)
Sounds like: Zero initial (starts directly with vowel/nasal glide)
Unaspirated
Airflow Tactile Test: Acts as a bridge into 'i' or 'ü' vowel sounds.
Tongue & Mouth Position: No initial consonant obstruction; tongue rises directly to form the vowel/nasal core.
Final Rhyme
in
Vowel Group: -i vowel group
Sounds like: -in rhymes with the English word 'in'
Mouth Shape Guide: Pronounce as standalone vowel 'een'.
Common Learner Trap: Keep vowel quality steady across all 4 tone contours.
Tone
T3 (214)
2 → 1 → 4 (214)
3rd Tone (Low-Dipping)
Tone Pitch & Cadence: Tone 3 dips down and rises, comparable to saying 'What?' in disbelief with a dipping pitch.
Sandhi: When followed by another 3rd tone syllable, yin3 changes to a 2nd tone (yín) via third-tone sandhi.
👂
Listening trap: Do not confuse with 'yīn' (Tone 1, high level) or 'yín' (Tone 2, rising).
👋
Physical Tone Gesture: Trace a checkmark in the air: dip down low from your normal speaking pitch and curve back up.
3. Writing
Topology: Left-right · Strokes: 11 strokes
Writing Balance Rule: The left radical (阝) should be slightly narrower and compressed, leaving ample room for the complex right component (急 variant structure without the heart).
Simplification Logic: Simplified from 隱 to 隐 by streamlining the right-hand side component while retaining the left-hand hill/mound radical.
4. Components
Radical阝 · left mound radical (ear/mound variant) (hill, mound, place)
Semantic Clue (形旁):阝 (Indicates a place or geographical formation where things can be hidden.)
Phonetic Clue (声旁):急 (original sound: jí / yǐn phonetic core)
A mound (阝) conceals something urgent or hidden away (急 variant side) inside its slopes.
阝 mound or hillside
急 phonetic and semantic hint for hidden urgency
Phonetic Family (形声字家族)
2· Phonetic Root: 隐 (yǐn)
5. History
Liushu category: Phono-semantic (形声)
Origin: Originally combined the mound radical (阝) representing terrain with a phonetic element indicating a restrictive or concealed state.
Semantic Evolution: Shifted from physical concealment behind a hill to general secrecy, invisibility, and abstract hidden qualities.
Often used in classical texts to describe hermits (隐士) who withdrew from public life into the mountains.
6. Sinosphere
🇻🇳
Sino-Vietnamese
ẩn
Corresponds to the Vietnamese hỏi tone (dipping), matching the Chinese 3rd tone.
🇯🇵
Kanji (Japanese)
On: イン (in) / Kun: かく.す (kakusu)
🇰🇷
Hanja (Korean)
은
Sound Shift Bridge: Sino-Xenic readings preserve the ancient nasal ending (-n/-m) corresponding to the Mandarin -in final.
7. Memory
Vivid Mnemonic Story
Behind the big earthen mound (阝), someone is urgently (急) hiding a secret treasure so nobody can see it.
Phonetic Family (形声字家族)
稳
wěnstable, steadyUses grain/harvest on the left instead of a mound, denoting steady grain stores.
隐
yǐnhiddenUses the mound radical (阝) on the left for hidden places.
Lookalikes & Traps (形近字)
稳(wěn)
稳 has grain (禾) on the left for stability; 隐 has the mound (阝) on the left for hidden locations.
8. Mastery
Active Recall Challenge
这架飞机有[___]功能，雷达很难探测到。
Clue: yǐn xíng
Common Learner Pitfall
Confusing the left radical of 隐 (阝, mound) with other similar left-side components, or missing the third tone dip.
Memory Prompts
Recognition: What does the character 隐 mean and how is it pronounced with tones?
Production: How do you write the character for 'hidden/secret' (yǐn) starting with the mound radical?
Real-World Video Context
Watch authentic native speakers pronounce and explain this word in real-world YouTube videos.
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隐yǐnhidden
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