Definition of unlucky
1
: marked by adversity or failure
an unlucky year
2
: likely to bring misfortune : inauspicious
an unlucky number
3
: having or meeting with misfortune
unlucky people
4
: producing dissatisfaction : regrettable
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Merriam-Webster unabridged
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Time Traveler for unlucky
The first known use of unlucky was circa 1530
See more words from the same year