A few sentences with the word thwart?
Thwart: To oppose or prevent.To thwart any outsiders from intruding, I built this wall made of broken bottles.Buffy realized if the news of the scandal got out it would thwart her chances of becoming the president.
I thwarted him from getting that trophie because it should be mine. I had to thwart him from all that embarressment.my friend thwarted me from getting hurt.