The word "surliness" refers to a bad-tempered or unfriendly attitude. In order to express this idea in other ways, some synonyms that can be used are harshness, gruffness, irritability, rudeness, or ill-will. These words convey a sense of negativity towards others, or a general lack of patience or politeness. Other synonyms for surlinesses might include curtness, brusqueness, abruptness, or snappiness, all of which suggest a lack of willingness to engage with others in a positive or friendly manner. Regardless of the specific term used, surliness suggests an unpleasant and unwelcoming attitude that is difficult to engage with or maintain a positive relationship with.