異口同音 (ikudouon) Japanese meaning: with one voice | Kotomora口
同
音
に
その
提
案
を
支
持
し
た
。
The participants unanimously supported the proposal.
They all said 'wonderful' in chorus.
Usage patterns
異口同音に言うto say something in unison
The students said "Thank you, teacher" all together in one voice.
異口同音に答えるto answer in unison
異口同音に主張するto insist/claim with one voice
The two of them answered "I don't know" in unison to the reporters' question.
The residents unanimously insisted that the construction be stopped.