কপটতা হল পুণ্য বা সাধুচরিত্রের এমন মিথ্যার বহিঃপ্রকাশ, যেখানে ধর্ম বা নৈতিকতার সাপেক্ষে আসল চরিত্র বা প্রবৃত্তিকে গোপন রাখা হয়। 

Hypocrisy is the practice of feigning to be what one is not or to believe what one does not. The word "hypocrisy" entered the English language c. 1200 with the meaning "the sin of pretending to virtue or goodness". Today, "hypocrisy" often refers to advocating behaviors that one does not practice. However, the term can also refer to other forms of pretense, such as engaging in pious or moral behaviors out of a desire for praise rather than out of genuinely pious or moral motivations.