wispy in WordNet English dictionary

1. lacking clarity or distinctness
   "a dim figure in the distance"; "only a faint recollection"; "shadowy figures in the gloom"; "saw a vague outline of a building through the fog"; "a few wispy memories of childhood"
   dim  faint  shadowy  vague  wispy 
   
2. thin and weak
   "a wispy little fellow with small hands and feet"- Edmund Wilson
   wisplike  wispy 
   

wispy in English Wiktionary