Synonyms of darkened
• It was a dark and stormy night.
dimmurkyshadyshadowygreycloudydingyovercastduskyunlitpitch-blackindistinctpoorly litsunlesstenebrousdarksome (literary)pitchyunilluminated
shadowyA shadowy place is dark or full of shadows.
• I watched him from a shadowy corner.
tenebrousgloomy, shadowy, or dark
Thesaurus for darkened from the Collins English Thesaurus