truism

• trueism (archaic)

From true +‎ -ism.

truism (plural truisms)

1. A self-evident or obvious truth.

   Synonyms: lapalissade, platitude

   • 2018 August 3, Philip Bump, “There’s a virus in Trumpland”, in The Washington Post‎^[1], archived from the original on 21 April 2021:

     It is a truism that the people who attend a rally for President Trump more than two years before he’s on the ballot again are generally strong supporters of President Trump.

   • 2018 November 13, Kate Julian, “Why Are Young People Having So Little Sex?”, in The Atlantic‎^[2], archived from the original on 13 November 2018:

     The phrase If something exists, there is porn of it used to be a clever internet meme; now it’s a truism.

2. A banality or cliché.

   Synonyms: platitude; see also Thesaurus:saying

   • 1837, L[etitia] E[lizabeth] L[andon], “The Remembrance of the Dead”, in Ethel Churchill: Or, The Two Brides. […], volume II, London: Henry Colburn, […], →OCLC, page 321:

     After a little decent sorrow had been put forth for the late "severe affliction," joined with some weariful truisms about resignation to the will of Providence, the rest of the epistle was filled up with reproofs about her ladyship's extraordinary and improper conduct in setting off without his consent!

• truismatic

• murtis

Borrowed from French truisme.

truism n (plural truisme)

1. truism