There are several synonyms for the word "half-staff." One of the most commonly used is "half-mast," which originated from nautical terminology as a reference to the position of a ship's flag. Another synonym is "half-tilt," which is often used in military contexts such as for honoring fallen soldiers. "Half-pole" is another variation that can be used. Additionally, "half-hoist" is sometimes used to describe the act of raising or lowering a flag to half-staff. Regardless of the synonym used, the act of lowering a flag to half-staff symbolizes mourning, respect, and tribute.