Verb

To make something up or invent it as one goes on; to proceed guided only by imagination, instinct, and guesswork rather than by a careful plan.

He had no speech prepared, so he improvised .

They improvised a simple shelter with branches and the rope they were carrying.

She improvised a lovely solo.

Verb

To change with a specific direction, progress.

(ambitransitive) To progress through a sequence of stages.

* Owen

All insects acquire the jointed legs before the wings are fully developed .

To advance; to further; to promote the growth of.

* Jowett (Thucyd)

We must develop our own resources to the utmost.

To create.

* {{quote-magazine, year=2013, month=July-August, author= Catherine Clabby

, magazine=(American Scientist), title= Focus on Everything , passage=Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus.

To bring out images latent in photographic film.

To acquire something usually over a period of time.

(chess) To place one's pieces actively.

(snooker, pool) To cause a ball to become more open and available to be played on later. Usually by moving it away from the cushion, or by opening a pack.

(math) To change the form of (an algebraic expression, etc.) by executing certain indicated operations without changing the value.