Anagrams of: DISIMPROVING

• getting higher or more vigorous

• prove to be false

• give something useful or necessary to

• give what is desired or needed, especially support, food or sustenance

• determine (what is to happen in certain contingencies), especially by including a proviso condition or stipulation

• mount or put up

• make a possibility or provide opportunity for; permit to be attainable or cause to remain

• supply means of subsistence; earn a living

• take measures in preparation for

• showing possibility of achievement or excellence

• likely to turn out well in the future

• Improvisation.

• A form of live entertainment characterized by improvisation and interaction with the audience.

• To perform improv.

• impressive in size, manner, or appearance

• used of a person's appearance or behavior; befitting an eminent person

• be shown or be found to be

• establish the validity of something, as by an example, explanation or experiment

• provide evidence for

• prove formally; demonstrate by a mathematical, formal proof

• put to the test, as for its quality, or give experimental use to

• increase in volume

• cause to puff up with a leaven

• take a trial impression of

• obtain probate of

• a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms