1. most full of ruts or grooves; having the deepest or most numerous tracks worn by wheels
Usage: superlative form of rutty

Examples

• The ruttiest part of the dirt road was nearly impassable after the heavy rains.
• We avoided the ruttiest section of the trail to protect our vehicle’s undercarriage.
• The farmer complained that his field had the ruttiest access road in the county.
• After years of heavy truck traffic, this became the ruttiest stretch of the logging road.
• The ruttiest areas of the parking lot collected water and became muddy puddles.