- 透明【とうめい】 - transparent, clear 
- 不透明【ふとうめい】 - opaque, obscure, murky, turbid, opacity, obscurity, unclear, unpredictable, uncertain 
- 透き通る【すきとおる】 - to be transparent, to be see-through, to be clear, to be clear (voice, sound) 
- 浸透【しんとう】 - permeation (of thought, ideology, culture, etc.), infiltration (e.g. of ideas), spread, penetration (e.g. into a market), pervasion, permeation (of a liquid, etc.), soaking, percolation, osmosis 
- 透視【とうし】 - seeing through, fluoroscopy, roentgenoscopy, clairvoyance, seeing through (objects), second sight 
- 透析【とうせき】 - dialysis 
- 人工透析【じんこうとうせき】 - (artificial) dialysis 
- 透かし【すかし】 - watermark (in a stamp, banknote, etc.), openwork (engraving, carving, etc.) 
- 肩透かし【かたすかし】 - under-shoulder swing-down, technique of grasping the arm of the opponent, the moment he comes forward, while stepping out of line and pushing down on the shoulder blade with the other hand, thus pulling him down, dodging, parrying (questions), disappointment, letdown 
- 透過【とうか】 - penetration, permeation, transmission 
- 見透かす【みすかす】 - to see through (a lie, scheme, etc.), to see into (someone's mind), to read (someone's true feelings), to penetrate 
- 透徹【とうてつ】 - transparency, clarity, coherence