cleanest
adj. B1 Intermediate US //ˈkɫinəst// UK //klˈiːnəst// clean·est
adj. the most free from dirt, mess, or bad things. You use this to describe the person or place that is the most tidy or pure.
adj. the superlative form of 'clean', indicating the highest degree of freedom from dirt, impurity, or disorder.
This is the cleanest room in the house.
After the long weekend of cleaning, the kitchen was the cleanest it had been in years.
The athlete was awarded the cleanest performance of the season, having completed the race without any technical errors or physical contact with other competitors.