A stop order is a command to cease or suspend an action. The crossword solutions WHOA, HALT, DONT, WAIT, AVAST, ITINERARY, AVASTMEHEARTIES, and DONTMOVEAMUSCLE are all related to this concept. WHOA, HALT, DONT, and WAIT are all commands to stop, while AVAST is an old-fashioned interjection used to express surprise or demand attention. ITINERARY is a plan of travel, and AVASTMEHEARTIES and DONTMOVEAMUSCLE are both phrases that emphasize the idea of stopping.