Merriam-Webster's Word of the Day for August 29, 2026, is "kith." Kith is an old-fashioned noun referring to familiar friends, neighbors, or relatives. It is most commonly encountered in the phrase "kith and kin." This idiom signifies "friends and relatives" collectively. Historically, "kith" once referred to knowledge or homeland. However, those meanings are no longer in common use. The word's modern usage closely aligns with its original sense of neighbors and acquaintances. "Kin" is an ancient word that can also independently denote relatives. Occasionally, "kith and kin" is used to refer solely to family members. This can be seen as redundant by some language enthusiasts. To avoid this criticism, "kith and kin" should encompass both friends and family.