Wiktionary
unsightliest
a. (context dated 19th century English) (en-superlative of: unsightly)
Usage examples of "unsightliest".
Also known as the Irlo Bronson Memorial Highway, it's one of Florida's all-time unsightliest thoroughfares, crammed with T-shirt shops, fast-food joints, cut-rate car rental lots, bargain motels, and souvenir kiosks.