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inerrant

[in-er-uh nt, -ur-]
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adjective
  1. free from error; infallible.
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Origin of inerrant

1645–55; < Latin inerrant-, equivalent to in- in-3 + errant-, stem of errāns present participle of errāre to wander, err; see -ant
Related formsin·er·ran·cy, nounin·er·rant·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for inerrantly

inerrant

adj.

1650s, in reference to "fixed" stars (as opposed to "wandering" planets), from Latin inerrantem (nominative inerrans) "not wandering," from in- "not, opposite of" (see in- (1)) + errans, present participle of errare "to err" (see err).

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Online Etymology Dictionary, © 2010 Douglas Harper