曙 is built from the 日, 罒 (net (top)), and 者 components.
It belongs to a phonetic family with 諸, 署, 緒, and 暑 — they share the 者 component and the reading ショ.
A common word using 曙 is 曙 (あけぼの), meaning “dawn; daybreak”.
Kanji that look similar include 曇, 曜, 題, and 顕.