燥 is built from the 火 and 喿 (chirping (in 操·燥)) components.
It belongs to a phonetic family with 繰, 操, and 藻 — they share the 喿 component and the reading ソウ.
A common word using 燥 is 乾燥 (かんそう), meaning “dry, arid, dehydrated”.
Don't confuse it with 操, 繰, and 藻.
