1. to let air or gas out of something, making it smaller or flat
2. to make someone feel less confident or enthusiastic
3. to reduce prices, costs, or economic values
Usage: economics

Examples

• The tire slowly deflated after hitting the nail.
• She used a pump to deflate the air mattress.
• His harsh criticism deflated her confidence.
• The team’s spirits were deflated after the loss.
• The government’s policies helped deflate housing prices.
• The balloon deflated and fell to the ground.
• Don’t let one bad grade deflate your motivation.