infidel

[ in-fi-dl, -del ]
/ ˈɪn fɪ dl, -ˌdɛl /

noun

adjective

Origin of infidel

1425–75; late Middle English < Late Latin infidēlis “unbelieving,” Latin: “unfaithful, treacherous.” See in-3, feal

Synonym study

1–3. See agnostic.
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British Dictionary definitions for infidel

infidel

/ (ˈɪnfɪdəl) /

noun

a person who has no religious belief; unbeliever

adjective

rejecting a specific religion, esp Christianity or Islam
of, characteristic of, or relating to unbelievers or unbelief

Word Origin for infidel

C15: from Medieval Latin infidēlis, from Latin (adj): unfaithful, from in- 1 + fidēlis faithful; see feal
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