鬱陶しい
うっとうしい gloomy (e.g. mood); depressing
Why it means this
鬱 (gloom, oppressive density) + 陶 (ateji) — oppressive; dreary; also irritating and in the way (鬱陶しい天気; 鬱陶しい前髪). Usually written うっとうしい.
Breakdown
Each character links to its full entry — origin story, stroke order, and readings.