• synonyms


See more synonyms for i.e. on Thesaurus.com
  1. that is.
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Origin of i.e.

From the Latin word id est
Can be confusede.g. i.e.


  1. Indo-European.
  2. Industrial Engineer.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for i.e.

namely, especially, expressly, specifically, particularly, specially, scilicet, videlicet

British Dictionary definitions for i.e.


abbreviation for
  1. id est
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Word Origin for i.e.

Latin: that is (to say); in other words
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 i.e.

abbreviation of Latin id est, literally "that is;" used in English in the sense of "that is to say."

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Online Etymology Dictionary, © 2010 Douglas Harper

i.e. in Culture


An abbreviation for id est, a Latin phrase meaning “that is.” It indicates that an explanation or paraphrase is about to follow: “Many workers expect to put in a forty-hour week — i.e., to work eight hours a day.” (Compare e.g.)

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.