透かす （すかす） to look through, to hold up to the light, to make an opening, to leave space, to space (lines), to prune (trees), to fart without making a sound
透ける （すける） to be transparent, to show through
透水 （とうすい） permeation (e.g. of water), percolation, seepage
透水性 （とうすいせい） permeability
Kanji
Jōyō kanji, Taught in junior high
JLPT level: N1
1035 of 2500 most used kanji in newspapers
Stroke count: 10
Meaning: transparent, permeate, filter, penetrate
Kunyomi: す.く す.かす す.ける とう.る とう.す
Onyomi: トウ
Composition: 秀 ⻌
透
Radical
Radical: 辵
Meaning: walk
辵
Examples
Onyomi Examples
透明 （トウメイ） transparent, clear
透析 （トウセキ） dialysis
失透 （シットウ） devitrification
市場浸透 （シジョウシントウ） market penetration
Kunyomi Examples
透く （すく） to be transparent, to leave a gap
透かす （すかす） to look through, to hold up to the light, to make an opening, to leave space, to space (lines), to prune (trees), to fart without making a sound
透ける （すける） to be transparent, to show through
透水 （とうすい） permeation (e.g. of water), percolation, seepage