peccadillo

[ pek-uh-dil-oh ]
/ ˌpɛk əˈdɪl oʊ /

noun, plural pec·ca·dil·loes, pec·ca·dil·los.

a very minor or slight sin or offense; a trifling fault.

Origin of peccadillo

1585–95; <Spanish pecadillo, diminutive of pecado sin <Latin peccātum transgression, noun use of neuter of past participle of peccāre to err, offend
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British Dictionary definitions for peccadillo

peccadillo
/ (ˌpɛkəˈdɪləʊ) /

noun plural -loes or -los

a petty sin or trifling fault

Word Origin for peccadillo

C16: from Spanish pecadillo, from pecado sin, from Latin peccātum, from peccāre to transgress
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