1. in a way that shows no mercy, compassion, or sympathy

Examples

• The storm struck the coast pitilessly for three days.
• She criticized his work pitilessly, pointing out every flaw.
• The sun beat down pitilessly on the desert travelers.
• The dictator ruled pitilessly, showing no concern for his people’s suffering.
• Time marches on pitilessly, waiting for no one.
• The disease progressed pitilessly despite all medical efforts.