1 extraordinary, unusual, singular, exceptional, noteworthy, notable, uncommon, incredible, unbelievable, impressive, phenomenal, astonishing, astounding, surprising:
With remarkable swiftness the falcon dropped on its prey.
2 striking, distinguished, signal, special, wonderful, marvellous, out of the ordinary, special, unique, significant, outstanding, rare, memorable, unforgettable, never-to-be-forgotten:
This novel is truly a remarkable achievement.
3 strange, different, odd, peculiar, curious:
Contortionists can do truly remarkable things with their bodies.