lucky in WordNet English dictionary

1. presaging or likely to bring good luck
   "a favorable time to ask for a raise"; "lucky stars"; "a prosperous moment to make a decision"
   golden  favorable  favourable  lucky  prosperous 
   
2. having or bringing good fortune
   "my lucky day"; "a lucky man"
   lucky 
   
3. occurring by chance
   "a lucky escape"; "a lucky guess"
   lucky