塞 (sāi) - Meaning, Stroke Order & Audio

塞

sāi[sai1]Tone 1

to plug, stop up, cork

HSK 6

Multiple Readings (多音字):

Guru Deep Dive

English · to plug, stop up, cork

Cached lesson

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Topology:Top-bottom

Strokes:13

Writing Balance Rule: The character is divided into a roof-like top component (宀), a middle section with box elements (土/方-like structure), and a bottom-most component (土). Keep the vertical axis strictly centered and compress the horizontal strokes vertically to avoid a top-heavy collapse.

1. Meaning

to plug or stop up an opening; to stuff things in

a stopper, cork, or plug (when used as a noun, typically pronounced sè or sài in specific compound words)

VerbNeutral#actions#physical manipulation#household objects

Sample Usage

把瓶子塞上。
bǎ píngzi sāi shàng.
Plug up the bottle.
不要塞太多东西。
bù yào sāi tài duō dōngxi.
Don't stuff in too many things.

2. Sound

/[saɪ̯⁵⁵]/Tone: 55

塞

sāisai1

¯(55)

=sāi

Initial Consonant

Type: Dental Fricative

Sounds like: s as in sun

Unaspirated

Airflow Tactile Test: Clear, steady sibilant hiss.

Tongue & Mouth Position: Tip of the tongue approaches the alveolar ridge just behind the upper front teeth without complete closure, allowing air to hiss.

Final Rhyme

Vowel Group: -a vowel group

Sounds like: -ai rhymes with 'eye' or the 'ai' in ' aisle'

Mouth Shape Guide: Pronounce as standalone vowel 'eye'.

Common Learner Trap: Keep vowel quality steady across all 4 tone contours.

Tone

T1 (55)

5 → 5 (55)

1st Tone (High-Flat)

Tone Pitch & Cadence: Tone 1 is a high, steady pitch, matching the exact flat pitch of a musical monotone or a sustained 'ahhh' at the top of your speaking range.

👂

Listening trap: Confusing the vowel ending with English '-ay' or '-igh'. Make sure the 'ai' sound maintains the clear open 'a' transitioning to 'i'.

👋

Physical Tone Gesture: A flat, high level hand motion held steady in the upper vocal register, like singing a single sustained high note.

3. Writing

Topology: Top-bottom · Strokes: 13 strokes

4. Components

Radical 土 · Earth Radical (earth, ground, soil)

Semantic Clue (形旁): 土 (Indicates material or blockage associated with earth/ground)

Phonetic Clue (声旁): 塞 (original sound: sāi)

Imagine a roof (宀) sheltering a packed layer of earth (土) inside an enclosure, used to firmly plug up a gap.

宀 roof or cover
土 soil or earth

Phonetic Family (形声字家族)

2· Phonetic Root: 塞 (sāi)

5. History

Liushu category: Phono-semantic (形声)

Origin: Originally depicted a fort or barrier built with earth and roofs for defense, which evolved to mean plugging up or obstructing passages.

Semantic Evolution: From a fortified stronghold or frontier pass (related to words like 边塞) to the action of blocking, stuffing, or plugging an opening.

In literary contexts, this character can also be read as 'sè' (to be blocked/stuffy) or 'sài' (frontier pass).

6. Sinosphere

7. Memory

Vivid Mnemonic Story

Under the roof (宀), you use packed earth and dirt (土) to completely SIGH (sāi) in relief after you successfully plug up the leaking hole in the wall.

Lookalikes & Traps (形近字)

寒(hán)

寒 means cold and uses the ice/water radical dots at the bottom, whereas 塞 uses the earth radical (土) at the bottom.

8. Mastery

Active Recall Challenge

请把这个瓶子[___]上。

Clue: sāi

Common Learner Pitfall

Confusing the three different pronunciations and meanings of 塞 (sāi to plug, sè in compound words like 堵塞, sài in 边塞 frontier pass).

Memory Prompts

Recognition: When you see 塞 with the meaning of plugging a bottle, what is its Pinyin and tone?

Production: How do you write the character meaning 'to plug or stuff in' with 13 strokes?

塞sāito plug, stop up, cork

Speed:

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