Persona non grata is a Latin term meaning 'an unwelcome person'. The crossword solutions for this term are LEPER (5 letters), PARIAH (6 letters), OUTCAST (7 letters), PRIG (4 letters), BORE (4 letters), incubi (6 letters), and betenoire (9 letters). LEPER refers to someone who is shunned due to having a contagious disease, while PARIAH is someone who is socially ostracized. An OUTCAST is someone who is excluded from a group or society, and a PRIG is someone who is excessively moralistic and judgmental. A BORE is someone who is dull and uninteresting, and an incubi is a male demon believed to have sexual intercourse with sleeping women. Finally, a betenoire is an object of fear or hatred.