1. harshness or severity in manner, speech, or conditions
2. roughness or unevenness of surface or texture

Examples

• The teacher spoke with unusual asperity when the students misbehaved.
• His voice carried an asperity that made everyone uncomfortable.
• The asperity of the winter weather made travel difficult.
• She was surprised by the asperity of his criticism.
• The asperity of the sandpaper made it perfect for smoothing rough wood.
• The rock’s asperity provided good grip for the climbers.