1. most unpleasant or offensive to look at; most ugly
Usage: superlative form of unsightly

Examples

• The unsightliest building in the neighborhood was finally torn down.
• Among all the scars, that was the unsightliest one on his arm.
• The garden’s unsightliest corner was hidden behind tall shrubs.
• She considered it the unsightliest dress in the entire store.
• The unsightliest part of the renovation was the exposed wiring.
• Even the unsightliest caterpillars can become beautiful butterflies.