Use "staved off" in a sentence

1. He staved off thoughts of breaking free and blowing into space but he didn't feel safe again until his feet were firmly planted on the spaceport's ground and the airlock had sealed behind him

2. Evil must be staved off

3. I saw in this the reason for my being staved off so long and the reason for my late guardian's declining to commit himself to the formal knowledge of such a scheme