相槌を打つ あいづちをうつ Also written 相づちを打つ, あいづちを打つ Meanings Expression, Godan verb to make use of aizuchi; to back-channel (i.e.: to throw in interjections to show that one is paying attention) See also: 相槌 (あいづち). Kanji 相 mutual. Read as あい. 槌 hammer; mallet. Read as つち. 打 hit. Read as うつ. Jinuma: Japanese Dictionary · Word lists