1. in a manner that grinds; with a grinding motion or sound
2. in a slow, laborious, or tedious manner; with difficulty or effort
Usage: figurative

Examples

• The old machine moved grindingly across the factory floor.
• The gears turned grindingly as the engine struggled to start.
• The project progressed grindingly through bureaucratic delays.
• She spoke grindingly about the painful memories.
• The car came to a grindingly slow halt on the gravel road.