un
thin
ka
ble
1
beyond what is acceptable or reasonable to imagine
- Losing the championship was unthinkable for the team.
- It was once unthinkable to travel to space as a tourist.
- The idea of quitting his job was unthinkable to him.
- War between the two nations seemed unthinkable.
- The accident caused unthinkable damage to the city.
Antonyms: