from The American Heritage® Dictionary of the English Language, 5th Edition.

  • intransitive verb To formulate theories or a theory; speculate.
  • intransitive verb To propose a theory about.

from The Century Dictionary.

  • To form a theory or theories; form opinions solely by theory; speculate. Also spelled theorise.

from the GNU version of the Collaborative International Dictionary of English.

  • intransitive verb To form a theory or theories; to form opinions solely by theory; to speculate.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb to formulate theories, especially about some specific subject
  • verb to speculate

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb construct a theory about
  • verb form or construct theories
  • verb to believe especially on uncertain or tentative grounds


Sorry, no etymologies found.


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  • Holmes says that it is a mistake to do this before having data on a case.

    July 14, 2012