speak with one voice

to express the same opinion It is a very rare event when my family speaks with one voice about anything.

Usage notes: must refer to two or more people, as in the example

Name	Pronounced	Usage
LabhrÁS	LOW-raws, LAV-raws	Irish
Stefanos	-	Greek
Kunigonde	-	Dutch
Peggy	PEG-ee	English
Netta (2)	-	Hebrew
Masozi	-	Southern African, Tumbuka