[v] become larger in size or volume or quantity; "his business expanded rapidly"; "The bag will expand when pressure is lowered"
[v] exaggerate or make bigger; "The charges were inflated"
[v] grow stronger; "The economy was booming"
[v] expand the influence of; "The King extended his rule to the Eastern part of the continent"
[v] make bigger or wider in size, volume, or quantity; "expand the house by adding another wing"
[v] add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing; "She elaborated on the main ideas in her dissertation"
[v] extend in one or more directions; "The dough expands"
amplify, blow up, boom, dilate, elaborate, enlarge, expatiate, exposit, expound, extend, flesh out, flourish, get ahead, lucubrate, prosper, spread out, thrive