1. to fail to honor a debt or obligation; to renege on a promise or agreement
Usage: informal; potentially offensive when referring to Welsh people

Examples

• He accused his business partner of welshing on their deal.
• The company was welshing on its promise to provide health benefits.
• She felt betrayed when he started welshing on his commitment.
• The contractor was welshing on the agreed timeline.
• They sued him for welshing on the loan agreement.
• Stop welshing on your responsibilities and pay what you owe.