Meaning of silent majority

si'lent major'ity

Pronunciation: [key]
  1. the U.S. citizens who supported President Nixon's policies but who were not politically vocal, outspoken, or active: considered by him to constitute a majority.
  2. any group of people who are not outspoken and who are considered to constitute a majority.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.