Self-righteous is a term used to describe someone who is overly confident in their own moral superiority. This term can be broken down into three crossword solutions: SMUG (4 letters), MORALISTIC (10 letters), and PRIGGISH (8 letters). SMUG describes someone who is excessively pleased with themselves, while MORALISTIC implies that the person is strongly adhering to a set of morals. Lastly, PRIGGISH suggests that the person is overly concerned with propriety and etiquette. All together, these words paint a picture of someone who is overly confident in their own moral superiority.