6 letters · 10 points in Scrabble
noun in working order
originA variant of dialectal kelter (“good condition, order”), of unknown origin; possibly related to kilt (“to gather up (skirts) around the body”) (cognate with Danish kilte (“to tuck”)), or Scots kilt (“proper way of doing something, knack”) (probably from kilt (“a slope; a tilt”), possibly a variant of English tilt). In the 19th century, kelter was the more common form in the United Kingdom, while…
Etymology from Wiktionary, CC BY-SA 3.0