SHADOWY

[adjective]She was startled by a sudden movement in the shadowy hallway (= one in which there were areas of darkness).The only photograph I have of my grandfather is this rather shadowy (= dark and not clear) one.Shadowy can also be used to refer to someone or something about which little is known.The English king, Arthur, is a somewhat shadowy figure who may not have even existed.He has a rather shadowy past.They are members of some shadowy extremist group.