色即是空 しきそくぜくう Meanings Noun form is emptiness; matter is void; all is vanity See also: 空即是色 (くうそくぜしき). Kanji 色 color. Read as シキ. 即 immediate. Read as ソク. 是 affirm 空 sky. Read as クウ. Word lists Buddhism Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists