未み知ちみちCommon word›JLPTN1›Freq.FrequencyTop 10,000Meanings1noun which may take the genitive case particle 'no', noununknown; not yet known; strangeDescribes something not yet encountered, understood, or experienced; often used in formal or written contexts. Antonym: 既知 (known).Antonyms: 既知未み知