1. in a way that cannot be appeased, pacified, or changed; relentlessly

Examples

• The detective pursued the case implacably for twenty years.
• She was implacably opposed to any compromise on the issue.
• The disease progressed implacably despite all treatments.
• He stared at his opponent implacably across the negotiating table.
• The storm moved implacably toward the coast.
• Time marches implacably forward, waiting for no one.