I asked Messenger of Allah ﷺ about virtue and vice. He said: Virtue is a kind disposition and vice is what rankles in your heart and that you disapprove that people should come to know of it. (Using translation from Muslim 2553a)

سَمِعْتُ النَّوَّاسَ بْنَ سَمْعَانَ الْأَنْصَارِيَّ يَقُولُ سَأَلْتُ رَسُولَ اللَّهِ ﷺ عَنِ الْبِرِّ وَالْإِثْمِ فقَالَ «الْبِرُّ حُسْنُ الْخُلُقِ وَالْإِثْمُ مَا حَكَّ فِي نَفْسِكَ وَكَرِهْتَ أَنْ يَطَّلِعَ عَلَيْهِ النَّاسُ»