The two crossword solutions for the term 'language related to Thai' are Shan and Lao. Shan is a language spoken by the Shan people, an ethnic group living mainly in Burma, Thailand, and Laos. It is a member of the Tai language family and is closely related to Thai. Lao is the official language of Laos and is also a member of the Tai language family. It is closely related to Thai and is mutually intelligible with it.