lapalissade

Etymology
From, equivalent to (a French nobleman and military officer) + ; see  for more.

Noun

 * 1) An obvious, self-evident truth, especially humorously so; a tautology or truism.

Etymology
From the name of (a French nobleman and military officer) +. His epitaph reads. However, due to the similarity between the letters ⟨f⟩ and ⟨ſ⟩ (long s), it was misread (accidentally or intentionally) as the truism.

Noun

 * , truism, tautology