Definitions

1. noun

the quality of being fast or rapid; swiftness

“The speed and agility of the cheetah is an example of its fastness in action.”

2. noun

firmness or steadiness; stability

“The fastness of the rock wall provided a safe shelter for the climbers.”

3. noun

a fortified place, especially a medieval fortress

“The castle was a symbol of the king’s fastness and power.”

4. noun

a place of safety or refuge

“The church served as a fastness for those fleeing from war.”

5. noun

a natural or artificial barrier, such as a rock face or a wall

“The fastness of the mountain provided a natural barrier against the invaders.”