1. comparative form of mirk; darker or more gloomy in appearance
Usage: chiefly literary or poetic
2. comparative form of mirk; more obscure, unclear, or mysterious
Usage: figurative

Examples

• The mirkier corners of the forest were difficult to navigate at dusk.
• His intentions seemed mirkier as the investigation progressed.
• The night grew mirkier as storm clouds gathered overhead.
• The mirkier passages of the old manuscript were hard to decipher.
• She peered into the mirkier depths of the lake.
• The plot took a mirkier turn in the final act of the play.