What Is Itai In Japanese?

What Is Itai In Japanese? Kana: いったい Kanji: 一体 Romaji: ittai. Type: noun; adverb. Meaning: …the heck; …in the world; …on earth; one object; one body; unity. Why do Japanese say Itai? 痛い (itai): Simple. When it’s found in a full sentence, it means “painful” or something “hurts” or is “sore.” No room for discussion.