definition
Firmly or securely fixed in place; stable.
example
That rope is dangerously loose. Make it fast!
synonyms
definition
Firm against attack; fortified by nature or art; impregnable; strong.
synonyms
definition
(of people) Steadfast, with unwavering feeling. (Now mostly in set phrases like fast friend(s).)
definition
Moving with great speed, or capable of doing so; swift, rapid.
example
I am going to buy a fast car.
synonyms
definition
Causing unusual rapidity of play or action.
example
a fast billiard table
definition
(of a piece of hardware) Able to transfer data in a short period of time.
definition
Deep or sound (of sleep); fast asleep (of people).
synonyms
definition
(of dyes or colours) Not running or fading when subjected to detrimental conditions such as wetness or intense light; permanent.
example
All the washing has come out pink. That red tee-shirt was not fast.
synonyms
definition
Tenacious; retentive.
definition
Having an extravagant lifestyle or immoral habits.
example
a fast woman
definition
Ahead of the correct time or schedule.
example
There must be something wrong with the hall clock. It is always fast.
synonyms
definition
(of photographic film) More sensitive to light than average.