im·pel 
(ĭm-pĕl)
(ĭm-pĕl)tr.v. im·pelled, im·pel·ling, im·pels
1. To urge to action through moral pressure; drive: I was impelled by events to take a stand.
2. To drive forward; propel.
[Middle English impellen, from Latin impellere : in-, against; see IN-2 + pellere, to drive; see pel-5 in the Appendix of Indo-European roots.]