しめる
しめる · shimeru · JLPT N2 · verb-ichidan
to be wet
💧 湿 = water radical 氵 + shi element: shimeru means wet or damp, marked by water
The left side 氵 is the water radical, which appears in many wet-related kanji. Shimeru is the kun reading of 湿, so it marks something that is damp or moist rather than soaked through.