ˌsilent maˈjority noun
the silent majority the ordinary people in a country, who are not active politically and who do not make their opinions known

[TahlilGaran] Dictionary of Contemporary English ▲

silent majority
the large numbers of people in a country or group who do not express their opinions publicly.
What does the silent majority expect from a new Labour government?

[TahlilGaran] English Idioms Dictionary ▲

silent majority
n., informal The large majority of people who, unlike the militants, do not make their political and social views known by marching and demonstrating and who, presumably, can swing an election one way or the other.
Sidney Miltner is a member of the silent majority.

[TahlilGaran] English Idioms Dictionary ▲