1. in the sense of unlucky
- hapless
- unlucky
- down on one's luck
- out of luck
- wretched
- luckless
- forlorn
- miserable
- poor
- unhappy
- ill-starred
- pitiful
- ill-omened
- ill-fated
- jinxed
- star-crossed
- doomed
- cursed
2. in the sense of adverse
- disadvantageous
- adverse
- unfavourable
- unadvantageous
- untoward
- unlucky
- untimely
- unwelcome
- inauspicious
- unpromising
- hostile
- unpropitious
- hard
- tough
- harmful
- inimical
- injurious
- detrimental
- disastrous
- ruinous
- dire
- calamitous
- distressing
- miserable
- lamentable
- grievous
- terrible
- tragic
- wretched
- awful
3. in the sense of regrettable
- inappropriate
- regrettable
- inapt
- unsuitable
- tactless
- infelicitous
- injudicious
- untoward
Example Sentences of Unfortunate
1. It was an unfortunate accident.
2. She faced an unfortunate situation today.
3. His unfortunate choice affected everyone.
4. They had an unfortunate misunderstanding yesterday.