1. to a degree that prevents or forbids something, especially because of excessive cost or difficulty

Examples

• The cost of college tuition has become prohibitively expensive for many families.
• The mountain trail was prohibitively steep for inexperienced hikers.
• Parking fees downtown are prohibitively high during peak hours.
• The new regulations make it prohibitively difficult to start a small business.
• Designer clothing is often prohibitively priced for average consumers.
• The software requires prohibitively advanced technical skills to operate.