Слово "impetus". Англо-русский словарь Мюллера

The impetus with which inclination became resolution was heightened by those little events of the day which had roused her discontent with the actual conditions of her life.

I felt veneration for St. John—veneration so strong that its impetus thrust me at once to the point I had so long shunned.

You will see what impetus would be given to your efforts and mine by our physical and mental union in marriage: the only union that gives a character of permanent conformity to the destinies and designs of human beings; and, passing over all minor caprices—all trivial difficulties and delicacies of feeling—all scruple about the degree, kind, strength or tenderness of mere personal inclination—you will hasten to enter into that union at once.”

As the impetus that carried Cherokee forward died down, he continued to go forward of his own volition, in a swift, bow-legged run.

Slowly at first, but with gathering impetus, the pent-up flood of traffic rumbled forward. A luxury mind--that was what she had; not a necessity mind.

This was to gain impetus for the descent.