boiling; seething; becoming heated (e.g. debate); excitement; soaring (prices); shooting up
sudden price jump; steep price rise
rise (in price or value); appreciation; advance
being much talked about; creating a stir; being the talk of town
sudden rise; sharp rise; boom; skyrocketing
soar (e.g. in price); jump; boom; sudden ride
sudden rise (in price); sharp rise; jump; surge
(enjoying) tumultuous popularity
rise and fall; fluctuations; ups and downs
sudden price jump; steep price rise
continued advance (in market price); continued rise
ebullism; formation of gas bubbles in bodily fluids
discussion (argument) becoming heated; debate being in a ferment
boiling-water reactor; BWR