On the spur of the moment.
For a particular purpose.
Created on the spur of the moment; impromptu.
Independent of previously instated network structure, like routers or access points.
For a particular purpose.
Postulated solely to save a theory from being falsified, without making any new predictions.
To do by guessing, to improvise.
To play (an instrument) or sing or to learn music without reading or memorizing sheet music; to learn a language without instruction.