1.Definition: filled with shade

"We sat on rocks in a shadowy cove"

Related Adjective(s):shadowed, shady, umbrageous

2.Definition: lacking clarity or distinctness

"Shadowy figures in the gloom"

Related Adjective(s):dim, faint, vague, wispy

3.Definition: lacking in substance

"Strange fancies of unreal and shadowy worlds", "Dim shadowy forms"

Related Adjective(s):wraithlike