fast in WordNet English dictionary

1. unrestrained by convention or morality
   "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"
   debauched  degenerate  degraded  dissipated  dissolute  libertine  profligate  riotous  fast 
   
2. acting or moving or capable of acting or moving quickly
   "fast film"; "on the fast track in school"; "set a fast pace"; "a fast car"
   fast 
   
3. at a rapid tempo
   "the band played a fast fox trot"
   fast 
   
4. (used of timepieces) indicating a time ahead of or later than the correct time
   "my watch is fast"
   fast 
   
5. (of a photographic lens or emulsion) causing a shortening of exposure time
   "a fast lens"
   fast 
   
6. unwavering in devotion to friend or vow or cause
   "a firm ally"; "loyal supporters"; "the true-hearted soldier...of Tippecanoe"- Campaign song for William Henry Harrison; "fast friends"
   firm  loyal  truehearted  fast 
   
7. securely fixed in place
   "the post was still firm after being hit by the car"
   fast  firm  immobile 
   
8. hurried and brief
   "paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit"
   flying  quick  fast 
   
9. resistant to destruction or fading
   "fast colors"
   fast 
   
10. (of surfaces) conducive to rapid speeds
    "a fast road"; "grass courts are faster than clay"
    fast 
    

1. abstaining from food
   fast  fasting 
   

1. abstain from eating
   "Before the medical exam, you must fast"
   fast 
   
2. abstain from certain foods, as for religious or medical reasons
   "Catholics sometimes fast during Lent"
   fast 
   

1. quickly or rapidly (often used as a combining form)
   "how fast can he get here?"; "ran as fast as he could"; "needs medical help fast"; "fast-running rivers"; "fast-breaking news"; "fast-opening (or fast-closing) shutters"
   fast  fast 
   
2. firmly or closely
   "held fast to the rope"; "her foot was stuck fast"; "held tight"
   fast  tight  fast  tight