1. Her face remained unrelentingly severe.

2. The rain continued unrelentingly.

3. The rain beat unrelentingly down.

4. The US and its allies should insist on this unrelentingly.

5. People who are unrelentingly vilified tend to end up cold and hard.

6. Moses thus portrayed Jehovah as clean in the superlative degree, devoid of impurity, beyond corruption, unrelentingly intolerant of uncleanness.