1. the quality of containing or resembling grit; roughness or granular texture
2. courage, resolve, and determination in the face of difficulty

Examples

• The grittiness of the sandpaper made it ideal for smoothing the wooden surface.
• She showed remarkable grittiness by continuing to train despite her injury.
• The film was praised for its grittiness and unflinching portrayal of urban life.
• I could feel the grittiness of sand between my teeth after the beach day.
• His grittiness and work ethic earned him respect from his teammates.
• The grittiness of the road surface provided good traction for the tires.