tautology

noun4

1. •
   (rhetoric) Redundant use of words, a pleonasm, an unnecessary and tedious repetition.

   • It is tautology to say, "Forward Planning".
2. •
   (rhetoric) An expression that features tautology.

   • The expression "raze to the ground" is a tautology, since the word "raze" includes the notion "to the ground".
3. •
   A statement that is true for all truth values of its propositional variables.
4. •
   A statement that is true for all truth values of its Boolean atoms.