How to Use "unimpeachable" with Example Sentences

1. The collapse of an unimpeachable credit
2. As a used prospect , the c-class is still an almost unimpeachable investment .
3. They finally got evidence from an unimpeachable source .
4. For anyone who thinks that climate science must be unimpeachable to be useful , the past few months have been a depressing time .
5. In debt markets , assets of unimpeachable quality ( namely g7 government bonds ) , though expensive , will likely get more so .