Simple Definition of unlucky
: having bad luck
: causing bad luck
: resulting from bad luck
Examples of unlucky
She was unlucky enough to get a flat tire on the way to her job interview.
Some people think that 13 is an unlucky number.
He thinks it's unlucky to have a black cat cross your path.
First Known Use of unlucky
Rhymes with unlucky
Seen and Heard
What made you want to look up unlucky? Please tell us where you read or heard it (including the quote, if possible).