The idiolect (or language) which acquires something new in the process is the ‘borrowing idiolect’ (or language).
- Hockett (1958), a pag.402

Whenever two idiolects come into contact, one or both may be modified. In face-to-face communication, either speaker may imitate some feature of the other’s speech; when the contact is indirect, as in reading, the influence can of course pass only in one direction. The feature which is imitated is called the ‘model’; the idiolect (or language) in which the model occurs, or the speaker of that idiolect, is called the ‘donor’; the idiolect (or language) which acquires something new in the process is the ‘borrowing idiolect’ (or language).
- Hockett (1958), a pag.402