Word: 异口同声 (yìkǒutóngshēng) Traditional: 異口同聲 异口同声 dictionary entry yìkǒutóngshēng different mouths, same voice; to speak in unison (idiom) Full dictionary entry for 异口同声 Example sentences using 异口同声 2 sentences, showing page 1 of 1. 他们异口同声，都说不去。 Tāmen yìkǒutóngshēng, dōu shuō bú qù. They all said in unison that they weren't going. 孩子们异口同声说生日快乐！ Háizimen yìkǒutóngshēng shuō shēngrìkuàilè! The children said happy birthday in unison!