D defs.my
Entry 1 sense Webster, 1913

Truism

/tro͞o'-ĭz-əm/ · Tru·ism · IPA /tɹuːizəm/
01 n. An undoubted or self-evident truth; a statement which is pliantly true; a proposition needing no proof or argument; -- opposed to falsism.
  1. 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.