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substitutivity

/ (ˌsʌbstɪtjuːˈtɪvɪtɪ) /
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noun

logic philosophy the principle that expressions with the same reference can be substituted for one another without affecting the truth-value of any context in which they occurSee also transparent context, opaque context

QUIZZES

QUIZ YOURSELF ON AFFECT VS. EFFECT!

In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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