戒心 かいしん Meanings Noun, する verb, Intransitive caution; precaution; care Kanji 戒 admonish. Read as カイ. 心 heart. Read as シン. Words containing 戒心 警戒心 (けいかいしん) wariness 警戒心を解く (けいかいしんをとく) to let down one's guard Jinuma: Japanese Dictionary · Word lists