shy in WordNet English dictionary

1. lacking self-confidence
   "stood in the doorway diffident and abashed"; "problems that call for bold not timid responses"; "a very unsure young man"
   diffident  shy  timid  unsure 
   
2. short
   "eleven is one shy of a dozen"
   shy 
   
3. wary and distrustful; disposed to avoid persons or things
   "shy of strangers"
   shy 
   

1. a quick throw
   "he gave the ball a shy to the first baseman"
   shy 
   

1. throw quickly
   shy 
   
2. start suddenly, as from fright
   shy