U+8AE6 "諦" CJK Unified Ideograph-# Unicode Character
U+8AE6 "諦" CJK Unified Ideograph-# is a Han character that carries the core meanings of truth, reality, or to examine closely, and is particularly significant in Buddhist contexts where it denotes the concept of ultimate truth or a noble truth, such as in the Four Noble Truths. Pronounced "tei" in Japanese and "dì" in Mandarin Chinese, it is composed of the radical for speech or words (言) on the left, suggesting verbal expression, and the phonetic component 帝 on the right, which originally meant emperor or supreme being. This character appears in classical Chinese philosophical and religious texts, as well as in modern usage within words like "諦観" (teikan) in Japanese, meaning to observe carefully or discern the truth, and "真諦" (zhēndì) in Chinese, meaning the true essence or ultimate principle.