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Definitions

fastness

[fast-nis, fahst-] / ˈfæst nɪs, ˈfɑst- /
NOUN
swiftness
Synonyms
Antonyms
STRONG


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

With each description from the world’s best players about the beastliness of Augusta National on Thursday — its firmness, its fastness, its fickle wind — Justin Rose’s round gained more shine as it went along.

From Washington Post

The Swiss have produced some of the most gloriously picture-perfect railway lines on the planet, their trains gliding along Alpine valleys or climbing doggedly up unfeasibly steep inclines to mountain fastnesses.

From The Guardian

We also use light fastness testers that replicate sunlight to see how fabrics behave when exposed to sun.

From New York Times

America is a Pacific nation, though rivals such as China wish otherwise, yearning to push a weary superpower out of its region, and back towards its continental fastness.

From Economist

K2’s fastness is so complete, it acquired no dependable name from the Balti tribes, who for millenniums did not know of its existence.

From New York Times