In philosophy, a sentence which asserts incomplete truth conditions for a proposition may be regarded as a truism. 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. A statement which is true by definition (for example, the Lapalissade "If he were not dead, he would still be alive") would also be considered a truism.
The word may also be used with a different sense in rhetoric, to disguise the fact that a proposition is really just an opinion.[example needed] Similarly, stating an accepted truth about life in general can also be called a truism.
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- "Definition: truism". http://www.websters-online-dictionary.org/: Webster's Online Dictionary. Retrieved 2010-03-10.
Noun Base (truism)
1. An obvious truth. Wordnet.
2. An undoubted or self-evident truth; a statement which is pliantly true; a proposition needing no proof or argument; -- opposed to falsism. Websters.