1. most severe, cruel, or unforgiving in treatment or judgment
Usage: superlative form of harsh
2. most unpleasantly rough, grating, or jarring to the senses
Usage: superlative form of harsh
3. most difficult to endure or survive
Usage: superlative form of harsh

Examples

• The judge gave the criminal the harshest sentence possible.
• Antarctica has some of the harshest weather conditions on Earth.
• Her harshest critic was actually herself.
• The harshest light made everyone squint.
• That was the harshest winter the town had experienced in decades.
• His harshest words came when he was angry.
• The desert’s harshest conditions test even experienced travelers.