How to Say
How to Write
tòu
HSK 5 Radical: 辶 10 strokes
Meaning: to penetrate; to seep through
💡 Think: 'TOO through' → too much penetration = thorough!
Compounds

📚 Character Story & Explanation

透 (tòu) meaning in English — through

透 is widely used in modern Mandarin across registers: in weather reports (‘雾散透了’ — ‘the fog has completely lifted’), education (‘把问题讲透’ — ‘explain the issue thoroughly’), and digital life (‘消息透出风声’ — ‘rumors leaked out’). A documented idiom is 说透 (shuō tòu, ‘to explain thoroughly’), emphasized in official pedagogical guidelines since the 1950s for effective teaching. The HSK 5 syllabus explicitly lists 透 as essential for expressing nuance in argumentation and description.

The character evolved from seal script, where the right side (秀) originally depicted grain ripening — symbolizing maturity and full emergence — combined with the walking radical 辶, suggesting movement toward completion. By the Han dynasty, 透 was already used in texts like the *Shuowen Jiezi* (c. 100 CE) to mean ‘to pass through completely’, confirming its early semantic stability.

The Chinese character 透 (tòu) conveys the core idea of complete passage or thoroughness — whether physical (light seeping through fabric), perceptual (a sudden insight), or abstract (a fully revealed truth). Unlike English verbs like 'penetrate' — which often carry aggressive or medical connotations — 透 is neutral and context-sensitive, frequently implying natural, inevitable, or exhaustive completion. Its radical 辶 (chuò, ‘walking’) signals motion and progression, anchoring the concept in dynamic traversal rather than static position.

Western equivalents vary widely by domain: in physics, 'permeate' or 'transmit' come closest; in cognition, 'dawn on', 'click', or 'sink in' mirror its idiomatic use for full understanding. Yet no single English word captures 透’s semantic range — from sunlight piercing clouds (阳光透过云层) to emotional exhaustion (累透了) or bureaucratic transparency (政策透明). This versatility reflects a cultural preference for process-oriented, relational meaning over rigid lexical boundaries.

In Chinese thought, 透 embodies the ideal of *thoroughness without force* — akin to water wearing away stone (水滴石穿) or Daoist wu-wei (effortless action). It appears in classical texts like the *Zhuangzi*, where '透彻' (tòuchè, 'thoroughly clear') describes enlightened perception unobstructed by bias. Unlike Western binaries (e.g., surface vs. depth), 透 suggests continuity across layers — not just reaching the core, but letting the core *emerge through* the surface. This resonates with Confucian ideals of sincerity (诚) and holistic self-cultivation.

💬 Example Sentences

Common Compounds

Similar Characters — Don't Mix These Up

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