" fluky "

1: coming or happening by good luck especially unexpectedly;

  * e.g., " ... a fluky coincidence that kept me safely at home when the blizzard hit "

•  Synonyms : 

•  fortuitous,

•  fortunate,

•  happy,

•  heaven-sent,

•  lucky,

•  providential

•  Antonyms : 

•  hapless,

•  ill-fated,

•  ill-starred,

•  luckless,

•  star-crossed,

•  unfortunate,

•  unhappy,

•  unlucky

2: happening by chance;

  * e.g., " ... the fluky selection of consecutive numbers on consecutive days of the lottery "

•  Synonyms : 

•  accidental,

•  casual,

•  chance,

•  fortuitous,

•  inadvertent,

•  incidental,

•  unintended,

•  unintentional,

•  unplanned,

•  unpremeditated,

•  unwitting

•  Antonyms : 

•  calculated,

•  deliberate,

•  intended,

•  intentional,

•  planned,

•  premeditated,

•  premeditative,

•  prepense,

•  set