fast cars
a fast swimmer
Computers are getting faster all the time.
The fast train to London takes less than an hour.
I like fast music very much. (Key English Test; A2; Gujarati)
Their hard work and successful software put them in the fast lane.
Fed up with life in the fast lane, Jack gave up his job and moved to the countryside.
Finally, should you ask why people are not happier than before, the answer is that nowadays they spend more hours on work than before because modern life is mostly a life in the fast lane. (Certificate of Proficiency in English; C2; Greek)
These intensive courses claim to offer a fast track to wealth and success.
If I ever found a job which lives up to these expectations, I would consider myself on [the] fast track already. (Certificate of Proficiency in English; C2; Italian)
We ran as fast as we could.
The accident was caused by people driving too fast in bad conditions.
I rode my bike home as fast as I could. (Preliminary English Test; B1; Portuguese)
He tried to get away, but she held him fast.
Thankfully, there are those who still cling to such age-old values as personal contentment and growth, regarding them as the anchors which hold happiness fast. (Certificate of Proficiency in English; C2; Greek)
I looked into his room but he was still fast asleep.
Then she took a relaxing bath and 20 minutes later she was fast asleep. (Certificate of Proficiency in English; C2; Spanish)