build up

development; accumulation

music to be played, a noise made, with increasing loudness

increase to climax

(an amount as the result of) increasing; to become greater in size, number, degree etc

addition, growth

the act, state, of being inflated; (a rise in prices brought about by) the expansion of the supply of money, credit etc

increase, swelling

a sudden upward movement off the ground by a person

jump; increase

to cause (something) to become wider, longer etc by unfolding or unrolling; to put (a substance) on a surface and extend its area by flattening etc

expansion, development; extent