Stumped by a crossword clue? Discover the language spoken west of 15-Across

The answer to this crossword question is “Thai.” The clue provides the information that the language spoken to the west of 15-Across is Lao. By looking at the crossword puzzle, we can see that 15-Across is “Mekong,” which is a river that runs through several Southeast Asian countries, including Laos and Thailand. Therefore, the language spoken to the west of the Mekong River in this case is Lao, and the language spoken to the east of it, which is Thailand, is Thai.