Definitions

1. adjective

most untidy or disheveled; having the most unkempt or matted appearance

“After the storm, the frowsiest parts of the garden were where the strongest winds had blown through.”

2. superlative form of adjective

most untidy or disheveled; having the most unkempt or matted appearance

“The frowsiest neighborhood in town was known for its abandoned houses and neglected parks.”