say it: DAHR-klee
darkly is an adverb meaning "without light". It carries 2 recorded senses.
in a dark glowering menacing manner
“he stared darkly at her”
Definitions, synonyms and semantic relations for darkly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.