1. A mild oath or exclamation used to express surprise, emphasis, or indignation.
Usage: archaic; chiefly British; euphemistic alteration of 'by God'

Examples

• Begad, what a sight that was!
• Begad, I never thought I'd see the day.
• The old gentleman exclaimed, 'Begad, you're right!'
• Begad, that's the most ridiculous thing I've heard.