theorize

[thee-uh-rahyz, theer-ahyz]
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verb (used with object), the·o·rized, the·o·riz·ing.
  1. to form a theory or theories about.
Also especially British, the·o·rise.

Origin of theorize

From the Medieval Latin word theōrizāre, dating back to 1630–40. See theory, -ize
Related formsthe·o·ri·za·tion, nounthe·o·riz·er, nouno·ver·the·o·ri·za·tion, nouno·ver·the·o·rize, verb (used without object), o·ver·the·o·rized, o·ver·the·o·riz·ing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for theorize

theorize

theorise

verb
  1. (intr) to produce or use theories; speculate
Derived Formstheorization or theorisation, nountheorizer or theoriser, noun
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

Word Origin and History for theorize
v.

1630s, perhaps a formation in English from theory + -ize. Related: Theorized; theorizing.

Online Etymology Dictionary, © 2010 Douglas Harper