peccadillo
noun [ C ] uk/ˌpek.əˈdɪl.əʊ/ us/ˌpek.əˈdɪl.oʊ/ peccadillos or peccadilloes
小错误，过失
a small fault or mistake, or something that someone does wrong that is not very serious
a youthful peccadillo 年轻时犯的小错误
He dismissed what had happened as a mere peccadillo. 他只把发生的事当作一个小过失而不予理会。
Synonym: indiscretion
Compare: sin noun (MORALS)venial