fast2 S2 W2
moving or able to move quickly:
a fast car
He's one of the fastest runners in the world.
doing something or happening in a short time:
in a short time
The subway is the fastest way to get downtown.
The company must give a faster response to clients' requests.
The rainforests are being chopped down at an alarmingly fast rate.
I'm a fast learner.
a clock that is fast shows a later time than the real time:
clock[not before noun]
That can't be the time - my watch must be fast.
five minutes/an hour etc fast
I always keep my watch 15 minutes fast.
a way of achieving something more quickly than is normally done
a young actress on the fast track to fame and success
a road on which vehicles can travel very quickly
a film or lens (2) that can be used when there is little light, or when photographing something that is moving very quickly
a colour that is fast will not change when clothes are washed ➔ colourfast
a fast surface is one on which a ball moves very quickly
done very quickly with a lot of effort and energy, or happening very quickly with a lot of sudden changes:
Arsenal's opening attack was fast and furious.
used to say that someone can get what they want very quickly, especially in starting a sexual relationship with another person
someone who talks quickly and easily but is often not honest or sincere
becoming involved quickly in sexual relationships with men:
fast cars and fast women
to tie something such as a boat or tent firmly to something else
two people who are very friendly for a long time