Definitions

1. adjective

worst in quality or condition; most inferior

“The company’s shabbiest product failed to impress critics.”

2. superlative adjective

used to compare three or more things; the most inferior of three or more

“Among the three houses, the one on the corner is the shabbiest.”

3. noun

the most inferior or worst of its kind

“The shabbiest part of town has seen significant revitalization efforts.”