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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"
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(used of timepieces) indicating a time ahead of or later than the correct time;
"my watch is fast"
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at a rapid tempo;
"the band played a fast fox trot"
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(of surfaces) conducive to rapid speeds;
"a fast road"
"grass courts are faster than clay"
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resistant to destruction or fading;
"fast colors"
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unrestrained by convention or morality;
"Congreve draws a debauched aristocratic society"
"deplorably dissipated and degraded"
"riotous living"
"fast women"
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hurried and brief;
"paid a flying visit"
"took a flying glance at the book"
"a quick inspection"
"a fast visit"
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securely fixed in place;
"the post was still firm after being hit by the car"
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unwavering in devotion to friend or vow or cause;
"a firm ally"
"loyal supporters"
"the true-hearted soldier...of Tippecanoe"
"fast friends"
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(of a photographic lens or emulsion) causing a shortening of exposure time;
"a fast lens"