The crossword solution for the term 'STATE TO BE IN' is ZEN, which is a three-letter word. ZEN is a school of Mahayana Buddhism that developed in China during the 6th century as Chán. It was strongly influenced by Taoism and developed as a distinct school of Chinese Buddhism. ZEN emphasizes the practice of meditation and insight into the nature of existence. It is also known for its emphasis on experiencing one's true nature and the attainment of enlightenment.