fast
Firm against attack; fortified by nature or art; impregnable; strong.
Other meanings
Steadfast, with unwavering feeling. (Now mostly in set phrases like .)
Moving with great speed, or capable of doing so; swift, rapid; light.
“I am going to buy a fast car.”
Example sentences
Word history
From Old English "fæst" (firm, secure).
Where this comes from
This definition is adapted from “fast” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.