1. to become dark or grow darker; to grow dim
Usage: literary; chiefly poetic
2. to appear dark or gloomy; to loom darkly
Usage: literary; chiefly poetic

Examples

• The sky began to darkle as storm clouds gathered overhead.
• Evening darkled the forest until the trees became mere shadows.
• The mood darkled when the news arrived.
• As the sun set, the landscape darkled into twilight.
• The room darkled with each passing minute after sunset.