1. ancestors, especially male ancestors from previous generations
Usage: plural form
2. the founders or early leaders of a country, organization, or movement
Usage: often capitalized when referring to American founding fathers

Examples

• She traced her family tree back to her forefathers in Ireland.
• The forefathers of this nation fought for independence.
• Our forefathers established these traditions centuries ago.
• The Founding Fathers are often called America’s forefathers.
• He honored the memory of his forefathers with a memorial service.
• The forefathers of modern medicine made important discoveries.
• These customs were passed down from our forefathers.