[fal-uh-buh l]
  1. (of persons) liable to err, especially in being deceived or mistaken.
  2. liable to be erroneous or false; not accurate: fallible information.

Origin of fallible

1375–1425; late Middle English < Medieval Latin fallibilis, equivalent to Latin fall(ī) (passive of fallere to deceive) + -ibilis -ible
Related formsfal·li·bil·i·ty, fal·li·ble·ness, nounfal·li·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for fallibilities

frailty, unreliability, errancy, misjudgment

British Dictionary definitions for fallibilities


  1. capable of being mistaken; erring
  2. liable to mislead
Derived Formsfallibility or fallibleness, nounfallibly, adverb

Word Origin for fallible

C15: from Medieval Latin fallibilis, from Latin fallere to deceive
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 fallibilities



early 15c., from Medieval Latin fallibilis "liable to err, deceitful." literally "that can be deceived," from Latin fallere "deceive" (see fail).

Online Etymology Dictionary, © 2010 Douglas Harper