verb

become or make larger or more extensive.

their business expanded into other hotels

increase in size,become larger,enlarge,swell,become distended,dilate,inflate,balloon,puff out/up,lengthen,stretch,thicken,fatten,fill out,intumesce,tumefy,grow,become/make larger,become/make bigger,increase in size/scope,extend,augment,broaden,widen,develop,diversify,multiply,add to,build up,scale up,branch out,broaden one’s horizons,extend one’s operations,spread,proliferate,mushroom