courtesy

UK: ˈkɜːtəsi | US: ˈkɜːrtəsi

Definition
  1. n. polite behavior, respect, or consideration for others

  2. n. a polite gesture or remark

  3. n. (historical) a feudal service or privilege

Structure
court <royal court>esy <noun suffix>court <royal court>esy <noun suffix>
Etymology

The word courtesy traces back to medieval feudal culture, where behavior befitting the royal court (court) was idealized. Over time, it generalized to denote polite conduct in broader society. The suffix -esy (via Old French -esie) solidified its meaning as a noun describing the quality of graciousness.

Examples
  1. He held the door open as a gesture of courtesy.

  2. The ambassador was greeted with every courtesy.

  3. In medieval times, courtesy was essential for knights.

  4. She thanked them out of courtesy, though unimpressed.

  5. Common courtesy dictates replying to invitations promptly.