The phrase "fast growers" refers to companies or individuals that are rapidly expanding and achieving high levels of growth within a short period of time. Full definition
Very fast growing companies that grow their earnings 15 % to 25 %, I will define as fast growers. (fastgraphs.com)
KP or KP 423 variety — a variety of bourbon arabica coffee grown in Africa; fast grower with good drought resistance. (coffeehabitat.com)
«Wall Street does not look kindly on fast growers that run out of stamina and turn into slow growers, and when that happens, the stocks are beaten down accordingly» Peter Lynch (mastersinvest.com)