also: いこうどうおん
noun, noun which may take the genitive case particle 'no'
with one voice; unanimously; in chorus
Used when many people say the same thing at once or agree completely. Often appears adverbially as 異口同音に.
参加者たちは異口同音にその提案を支持した。
The participants unanimously supported the proposal.
彼らは異口同音に「素晴らしい」と言った。
They all said 'wonderful' in chorus.