The phrase "marking with a red letter" refers to the act of designating or highlighting something of special importance, significance, or notoriety. It is derived from the historical practice of using red ink or pigments to emphasize or bring attention to specific words, phrases, or passages. The red lettering denotes an exceptional or exceptional meaning, often implying a warning, priority, or exceptional status.
This expression can also be traced back to Medieval times when illuminated manuscripts commonly used red ink to draw focus to important sections of text, such as the opening of a chapter or specific dates in religious texts. The use of red lettering was reserved for only the most critical segments, elevating their importance and distinction.
Today, the term "marking with a red letter" is employed in a figurative sense to denote any action that singles out or emphasizes a specific event, action, or individual. It implies that the marked subject has significant significance, either positive or negative, and should be accorded special attention or scrutiny.
In broader contexts, marking with a red letter is often associated with recording or highlighting outstanding achievements, exceptional events, exceptional individuals, or significant milestones. It implies the need for others to take notice and recognize the significance of the marked subject.
