MEANINGS:

Diminish: To make smaller or less or to cause to appear so.

Dramatically:  Of or relating to drama or the theater.

Rocket: A vehicle or device propelled by one or more rocket engines, especially such a vehicle designed to travel through space.

Gain: To come into possession or use of; acquire

Boost: To raise or lift by pushing up from behind or below

Jump: To spring off the ground or other base by a muscular effort of the legs and feet.

Halve: To divide (something) into two equal portions or parts.

Rapid: Moving, acting, or occurring with great speed. See Synonyms at fast.

Trough: A long, narrow, generally shallow receptacle for holding water or feed for animals.

Steep: Having a sharp inclination; precipitous.

Sharp: Having a thin edge or a fine point suitable for or capable of cutting or piercing.

Gradually: Advancing or progressing by regular or continuous degrees.

Soar: To rise, fly, or glide high and with little apparent effort.

Surge: To rise and move in a billowing or swelling manner.

Steady: Firm in position or place; fixed.

Slump: To fall or sink heavily; collapse.

Peak:  A tapering, projecting point; a pointed extremity.

Plummet: Something that weighs down or oppresses; a burden.

Downturn: A tendency downward, especially in business or economic activity.