What is the informal equivalent of いいえ


I was initially taught that いえ was the informal version of いいえ. Recently, I
have read on several websites that いえ should only be used to refer to
house/home 家. Is this true and if so, what is the negative equivalent of え?




いえ is definitely used informally for いいえ, though it's not super casual. More
casual options include いや, ううん, or 違う. That being said, you don't necessarily
need a word that means 'no'; you can reply to 「フランスに行ったことある？」with just 「ないよ」

