The word "nak" is a slang term that signifies someone or something that is extremely and excessively attractive or appealing. It is often used to describe a person or object that is very pleasing to look at or be around. Full definition
Prime Minister Lee Nak - yeon is worried about the effects of bitcoin on the country's young people. (techtimes.com)
As we report in our latest studio profile, though, you can be quite sure that no - one at Nik Nak thinks that way - because not only are they dedicated to developing games for kids, they actually enjoy it. (mcvuk.com)
Ji Hyun Jeong, Chong Nak Son, The Korean Psychological Association, THE KOREAN JOURNAL OF HEALTH PSYCHOLOGY 19 (1), 2014, 99 - 117 (dbpia.co.kr)