ad libitum

Etymology
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Adverb

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

Adjective

 * 1) As much as desired, to one's fill, without restriction.
 * an ad libitum diet

Etymology
Borrowed from.

Adverb

 * , at one's pleasure, impromptu

Adverb

 * 1)  at one's pleasure, allowing freedom to improvise, allowing variation from the printed notes or tempo.
 * 2) Without advanced preparation; spontaneously; impromptu; ad lib.
 * 3) Without restriction.

Etymology
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Adverb

 * 1) ad lib,