swell

noun
A full or gently rounded shape or form. (the soft swell of her breast)
A gradual increase in amount, intensity, or volume. (a huge swell in the popularity of one-day cricket)
A slow, regular movement of the sea in rolling waves that do not break. (there was a heavy swell)
A mechanism for producing a crescendo or diminuendo in an organ or harmonium.
A fashionable or stylish person of wealth or high social position. (a crowd of city swells)

verb
(especially of a part of the body) become larger or rounder in size, typically as a result of an accumulation of fluid. (her bruised knee was already swelling up)
Become or make greater in intensity, number, amount, or volume. (the low murmur swelled to a roar)

adjective
Excellent; very good. (you're looking swell)