This language is a part of the Tai languages of Southeast Asia. It is a tonal language and is generally monosyllabic. There are polysyllabic words although they are borrowed from Pali and Khmer.
Lao language has no inflections.
History of Lao Language . Lao Language originated from an offshoot of ancient Pali. It is similar to, Khmer, and Thai. Note that due to Thai media imports in Laos, many Lao people can speak Thai while almost no Thais can speak Lao. The primary reason why we have Lao language is because of Buddhism.