peccadillo UK /ˌpɛ.kəˈdɪ.ləʊ/US /ˌpɛ.kəˈdɪ.loʊ/ noun2 •A small flaw or sin.The sex scandal issue isn’t really central, since Americans have a long record of voting for the candidates they think can deliver, regardless of private peccadilloes. — 2016 •A petty offense.When he comes to the prayer, he sometimes does me the honor of personally recommending me to the Lord, advising him that I am a worthy man and begging him to condone my occasional peccadillos. — 1929 formspeccadilloes · peccadillos