透ける (すける) To Be Transparent, To Be See-Through
透く (すく、not on WK) To Be Transparent, To Leave A Gap
透き通る (すきとおる) To Be Transparent, To Be Clear, To Be See-through
澄む (すむ) To Become Clear, To Become Transparent
透明 (とうめい) Transparent, Transparency
不透明 (ふとうめい) Opacity, Opaque