Princeton's WordNet

1. unlucky, luckless(adj)

   having or bringing misfortune

   "Friday the 13th is an unlucky date"

2. doomed, ill-fated, ill-omened, ill-starred, unlucky(adj)

   marked by or promising bad fortune

   "their business venture was doomed from the start"; "an ill-fated business venture"; "an ill-starred romance"; "the unlucky prisoner was again put in irons"- W.H.Prescott

Kernerman English Learner's Dictionary

1. unlucky(adjective)ʌnˈlʌk i

   not good luck, or not having good luck; = unfortunate

   It was very unlucky for us that the show was canceled.; I'm very unlucky - I've never won anything.

2. unluckyʌnˈlʌk i

   considered to bring bad luck

   Is the number 13 unlucky?

Wiktionary

1. unlucky(Adjective)

   unfortunate, marked by misfortune

2. unlucky(Adjective)

   inauspicious

3. unlucky(Adjective)

   having ill luck

4. unlucky(Adjective)

   bringing ill luck

Origin: From un- + lucky

Webster Dictionary

1. Unlucky(adj)

   not lucky; not successful; unfortunate; ill-fated; unhappy; as, an unlucky man; an unlucky adventure; an unlucky throw of dice; an unlucky game

2. Unlucky(adj)

   bringing bad luck; ill-omened; inauspicious

3. Unlucky(adj)

   mischievous; as, an unlucky wag

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