僧 is built from the 亻 (person (left)) and 曾 (formerly / once) components.
It belongs to a phonetic family with 増, 層, 贈, and 憎 — they share the 曾 component and the reading ゾウ.
A common word using 僧 is 僧 (そう), meaning “monk, priest”.
Don't confuse it with 贈, 増, 憎, and 層.