Synonyms and related words :
Abraham, Amos, Cassandra, Daniel, Ezekiel, Haggai, Hosea, Isaac, Isaiah, Jacob, Joel, Jonah, Joseph, Joshua, Malachi, Micah, Moses, Nahum, Samuel, Zephaniah, admonisher, cautioner, flagman, lighthouse keeper, lookout, lookout man, monitor, prophet, prophet of doom, sentinel, sentry, signaler, signalman, vates sacer, warner