truism Meaning, Definition & Usage

  1. noun an obvious truth

WordNet

Tru"ism noun
Etymology
From True.
Definitions
  1. An undoubted or self-evident truth; a statement which is pliantly true; a proposition needing no proof or argument; -- opposed to falsism.
    Trifling truisms clothed in great, swelling words. J. P. Smith.

Webster 1913