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A truism is a claim that is so obvious or self-evident as to be hardly worth mentioning, except as a reminder or as a rhetorical or literary device, and is the opposite of falsism.[1]

In philosophy, a sentence which asserts incomplete truth conditions for a proposition may be regarded as a truism.[2] An example of such a sentence would be "Under appropriate conditions, the sun rises." Without contextual support – a statement of what those appropriate conditions are – the sentence is true but incontestable.[3]

Lapalissades, such as "If he were not dead, he would still be alive", are considered to be truisms.[citation needed]

See also[edit]


  1. ^ "Definition: truism". Webster's Online Dictionary. Archived from the original on 2011-06-28. Retrieved 2010-03-10. An undoubted or self-evident truth; a statement which is pliantly true; a proposition needing no proof or argument; -- opposed to falsism. Websters. {{cite web}}: External link in |quote= (help)
  2. ^ "Truism - Definition and Examples of Truism". Literary Devices. 2014-03-10. Retrieved 2021-08-31.
  3. ^ "truism". Retrieved 2021-08-31.