Rubor is a Latin term that refers to a redness or blush in the skin caused by an increase in blood flow. Synonyms for this word include blushing, flush, crimson, pinkness, and ruddiness. These terms are often used to describe a natural or physiological response to emotions, such as embarrassment or excitement. Other synonyms for rubor can also include inflammation, irritation, or swelling, which can indicate an underlying medical condition or injury. When used metaphorically, rubor can also refer to a sense of embarrassment or shame, and synonyms for this meaning can include humiliation, mortification, or chagrin.