podstawiać

Etymology
From.

Verb

 * 1)  to put under, to place under
 * 2)  to put in front of, to bring closer, to serve
 * 3)  to bring a vehicle, to fetch a vehicle
 * 4)  to swap, to substitute, to replace
 * 5)  to substitute
 * 6)  to hang
 * 7)  to pull up, to pull in
 * 8)  to pass oneself off, to impersonate