倍 is built from the 亻 (person (left)) and 咅 (split (in 部·倍)) components.
It belongs to a phonetic family with 賠, 培, and 陪 — they share the 咅 component and the reading バイ.
A common word using 倍 is 倍 (ばい), meaning “double”.
Kanji that look similar include 修, 俳, 俵, and 俸.
