|Origin:||tremendus, from tremere; TREMBLE|
very big, fast, powerful etc:
Suddenly, there was a tremendous bang, and the whole station shook.
She was making a tremendous effort to appear calm.
She praised her husband for the tremendous support he had given her.
Sales have been tremendous so far this year.
This plan could save us a tremendous amount of money.
She's got a tremendous voice, hasn't she?