How to Use "tautology" with Example Sentences

1. It 's a tautology designed to evade self-incrimination .
2. In this case , it is a tautology that americans are consuming beyond their means .
3. The problem of teleology and tautology of functional analysis in sociology .
4. The president 's weakness for repetition sometimes results in tautology .
5. To say that something is'adequate enough'is a tautology .