infidelity Pronunciation: /ˈɪnfəˈdeləti; ˌɪnfɪˈdeləti/Translate infidelity | into French | into German | into Italian Spanish translation of infidelityn u c (pl -ties) infidelidad (f)infidelity in other Oxford dictionaries Definition of infidelity in the British & World English dictionary Definition of infidelity in the US English dictionary