The statement `he is brave or he is not brave' is a tautology.
source: WordNet 3.0
useless repetition
To say that something is `adequate enough' is a tautology.
source: WordNet 3.0
A repetition of the same meaning in different words; needless repetition of an idea in different words or phrases; a representation of anything as the cause, condition, or consequence of itself, as in the following lines: --
The dawn is overcast, the morning lowers, And heavily in clouds brings on the day.
