Abbreviation of adaptation. / Abbreviation of adapter. / Abbreviation of archdiocese. / (grammar, also spelt adv(.)) Abbreviation of adverb. / (also spelt ad) Abbreviation of advertisement.

Abbreviation of adapt. / Abbreviation of adapted. / (imperative, medicine, in prescriptions, also spelt add.) Abbreviation of addantur.

plural of Ad

A nickname for Adam.

plural of Adelie

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

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.

To perform without script. / To perform without preparation. / To perform extemporaneously.

At pleasure. / At will. / To whatever extent. / Extemporaneously.