Russian Rejection is a term used to describe the refusal of the Soviet Union to accept the Marshall Plan, an American initiative to aid European countries in rebuilding after World War II. The Marshall Plan was rejected by the Soviet Union, and the term 'Russian Rejection' is used to refer to this refusal. The word 'NYET' is a Russian word meaning 'NO' or 'not, ' which is often used to express rejection or refusal.