As much as desired, to one's fill, without restriction.

Characterized by doing something ad libitum.

For a particular purpose. / Created on the spur of the moment; impromptu. / (sciences, of a hypothesis) Postulated solely to save a theory from being falsified, without making any new predictions.

On the spur of the moment. / For a particular purpose.

An advertisement that stretches across (most often the top of) a web site.

To improvise all or part of a speech or other performance, especially in comedy.

A person who ad-libs, particularly one who is well known for skill in ad-libbing.

sequential

in sequence; sequentially

in agreement