Adjective:
having or bringing misfortune;Friday the 13th is an unlucky date
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
unhappy，unfortunate，unlucky，disastrous这些形容词均有“不幸的”之意。
unhappy多用于表示心理状态，指由于不满意或遇到一般性倒霉事而感到不愉快。
unfortunate语气较强，多指因命运不佳，意外不幸或事业失败、生活处于困境等而感到不幸。
unlucky指因缺少或一时无机遇，虽作了努力，但事不从心，感到失意。
disastrous着重不可避免和后果严重。
be born under an unlucky star生在不幸中
近义词 tragic悲剧的hapless倒霉的fateful宿命的ominous不祥的baleful有害的wretched可怜的luckless不幸的unhappy不快乐的doomed命中注定的ill-omened不吉的unfortunate不幸的inauspicious不祥的disastrous灾难性的afflictive给人痛苦的unsuccessful不成功的disadvantageous不利的ill-fated注定要倒霉的…star-crossed时运不济的ill-starred(=ill-facted…反义词 lucky幸运的
形容词99%,名词1%
用作形容词You were justunlucky.你只是运气不好。
She wasunluckyto catch a cold on the first day of her holiday.她太倒霉了，休假第一天就感冒了。
It was quiteunluckyfor anyone to be stolen from.对任何人来说，家中失窃绝非幸事。
It's consideredunluckyto walk under a ladder.从梯子下面走过被认为是不吉利的。
He has a superstitious thought that black cat areunlucky.他有一种迷信的想法认为黑猫不吉祥。