Wordnet 3.0
ADJECTIVE (1)
1. 
 lacking in substance; 
- Example: "strange fancies of unreal and shadowy worlds"- W.A.Butler- Example: "dim shadowy forms"- Example: "a wraithlike column of smoke"[syn: shadowy, wraithlike]
WordNet (r) 3.0 (2006):
wraithlike
    adj 1: lacking in substance; "strange fancies of unreal and
           shadowy worlds"- W.A.Butler; "dim shadowy forms"; "a
           wraithlike column of smoke" [syn: shadowy,
           wraithlike]