HanziGuru.睏 · kùn
睏
kùn[kun4]Tone 4

sleepy, tired

HSK 3
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困
Guru Deep Dive

English · sleepy, tired

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Topology:Full enclosure
Strokes:7
Writing Balance Rule: The outer square enclosure (口) must be drawn wide and evenly squared off first, leaving enough interior space for the inner tree component (木) so that it floats comfortably without touching the borders.
Simplification Logic: The traditional form 睏 uses 目 (eye) inside, indicating eyes closing when tired. The modern simplified form 困 replaces the eye with 木 (tree), symbolizing a tree trapped inside an enclosure.
1. Meaning

sleepy or tired

to trapto surroundto detainhardship
Adjective / VerbNeutral#physical state#emotion#confinement
Sample Usage
  • 我很困，想去睡觉。
    wǒ hěn kùn, xiǎng qù shuìjiào.
    I am very sleepy and want to go to sleep.
  • 敌人被困在了山谷里。
    dírén bèi kùn zài le shāngǔ lǐ.
    The enemy was trapped in the valley.
2. Sound
/[kʰu̯ən⁵¹]/Tone: 51
睏
kùnkun4
++
`(51)
=kùn
Initial Consonant
k
Type: Aspirated Velar
Sounds like: k sound as in 'key' or 'kite'
Aspirated
Airflow Tactile Test: Strong gust of air from throat! Tissue held in front MUST fly forward.
Tongue & Mouth Position: Back of tongue raised against the soft palate
Final Rhyme
un
Vowel Group: -u vowel group
Sounds like: -oon sound as in 'spoon'
Mouth Shape Guide: Pronounce as standalone vowel 'wuhn'.
Common Learner Trap: Keep vowel quality steady across all 4 tone contours.
Abbreviated Rhyme Rule: un is short for uen
Tone
T4 (51)
4th Tone (High-Falling)
Tone Pitch & Cadence: Tone 4 starts high and drops sharply to the bottom, similar to a sharp command like 'Stop!' in English.
👂
Listening trap: Do not confuse it with 快的 kuài (Tone 4) or 哭 kū (Tone 1). Make sure to pronounce the final nasal -n clearly instead of dropping into an open vowel.
👋
Physical Tone Gesture: Tone 4 is a sharp downward slash, like a nodding 'yes' or dropping an object firmly downward.
3. Writing

Topology: Full enclosure · Strokes: 7 strokes

Writing Balance Rule: The outer square enclosure (口) must be drawn wide and evenly squared off first, leaving enough interior space for the inner tree component (木) so that it floats comfortably without touching the borders.

Simplification Logic: The traditional form 睏 uses 目 (eye) inside, indicating eyes closing when tired. The modern simplified form 困 replaces the eye with 木 (tree), symbolizing a tree trapped inside an enclosure.

4. Components

Radical 囗 · Enclosure Radical (Boundary, enclosure, or box)

Semantic Clue (形旁): 囗 (Represents a fenced boundary or prison walls)

Phonetic Clue (声旁): 木 (original sound: mù)

A tree (木) planted inside a small box or courtyard wall (囗) has no room to grow and feels stifled, trapped, and exhausted.

  • 囗 Enclosure or boundary
  • 木 Tree
5. History
Liushu category: Compound ideogram (会意)

Origin: Originally depicted a tree planted inside an enclosure (囗), signifying a plant restricted in growth, which later extended to mean being trapped, confined, or physically exhausted and worn out.

Semantic Evolution: From being hemmed in or surrounded by walls, it evolved into the modern meanings of being trapped (surrounded) and feeling completely drained of energy (sleepy/tired).

  • In ancient texts, 困 frequently meant besieged or cornered in military contexts.
6. Sinosphere
7. Memory
Vivid Mnemonic Story

Imagine a lonely tree (木) locked inside a tiny four-sided jail cell (囗). With zero sunlight and no room to stretch its branches, the tree gets so bored and exhausted that it falls fast asleep.

Phonetic Family (形声字家族)
因
yīncause / reasonInside the box is a 'big' person (大) instead of a tree (木).
固
gùfirm / solidInside the box is an ancient component or old scholar symbol (古).
国
guócountryInside the box is jade (玉).
Lookalikes & Traps (形近字)
因(yīn)
困 has a tree (木) inside meaning trapped/tired, while 因 has 'big' (大) inside meaning cause/reason.
固(gù)
困 has a tree (木) inside, whereas 固 has 'ancient' (古) inside meaning solid.
8. Mastery
Active Recall Challenge
我昨天晚上沒睡好，現在覺得很[___]。
Clue: kùn
Common Learner Pitfall

Confusing the inner component with 大 (in 因) or 古 (in 固), which completely changes the character into a different vocabulary word.

Memory Prompts
Recognition: When you see 困, what two core meanings come to mind?
Production: How do you write the character for 'sleepy / tired' using an enclosure and a tree?
Real-World Video Context

Watch authentic native speakers pronounce and explain this word in real-world YouTube videos.

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