What does お互い mean?
お互い is a Japanese adjective meaning “mutual, reciprocal, each other” in English. It is written as お互い in kanji, おたがい in hiragana, and otagai in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
２週間前は、お互い知りもしませんでした。
Two weeks ago, we didn't even know each other.