burgeon
BUR-junverbMeaning to grow or expand quickly
Memory hook BURGER-on: the BURGER stack grows FAST. At the cookout, Sven’s stack of burgers grows fast: one, then three, then six, taller than his nose! The stack burgeons.
Weeds burgeoned in the empty lot after a week of rain.
In context The town’s population burgeoned after the new factory opened; in just three years, two new schools were built and the old one doubled in size.
Similar grow rapidly, boom, mushroom, expand
Opposite shrink, dwindle, decline
From Old French burjon, “a bud.”