1. in a smooth, glossy, or well-groomed manner
2. in a streamlined or elegantly designed way

Examples

• The cat moved sleekly through the tall grass.
• Her hair was sleekly styled for the formal event.
• The sports car was sleekly designed with aerodynamic curves.
• The dolphin swam sleekly through the crystal-clear water.
• The new smartphone was sleekly crafted with a minimalist design.
• The dancer moved sleekly across the stage.