From Longman Dictionary of Contemporary Englishspeak with one voicespeak with one voiceif a group of people speak with one voice, they all express the same opinion On this issue, the 12 organizations spoke with one voice. → speak
Examples from the Corpus
speak with one voice• Salomon Brothers was speaking with one voice, and it was loud.• It became extraordinarily difficult for them to speak with one voice on critical issues.• This has already raised fears among foreign governments that the administration is not speaking with one voice on vital international issues.• Where Clinton speaks with one voice, they speak with several, weakening their philosophical case.speak with one voicespeak with one voiceAGREEif a group of people speak with one voice, they all express the same opinion → voiceExamples from the Corpus
speak with one voice• Where Clinton speaks with one voice, they speak with several, weakening their philosophical case.• This has already raised fears among foreign governments that the administration is not speaking with one voice on vital international issues.• It became extraordinarily difficult for them to speak with one voice on critical issues.• Salomon Brothers was speaking with one voice, and it was loud. 