When the train stopped, when she got off and heard the concrete of the platform under her heels, she felt light, lifted, impelled to action.
He wondered why this was a motive that had no power to impel him.
Years ago, in college, he had been taught that the only effective means to impel men to action was fear.
She got up, with no purpose in mind, but impelled by some instinct from the past, as if acting in a vacuum where honesty was not relevant any longer, but knowing no other way to act.
There are no more uses of "impel" in the book.
Show samples from other sources
When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another ... that they should declare the causes which impel them to the separation.
Thomas Jefferson -- The Declaration of Independence
The only explanation which I could think of for this mass exodus was that I had somehow disturbed the wolves so seriously they had felt impelled to abandon their den.