The objectives of this research article were to study the relations of Sanskrit to English, to investigate English words identified as of Sanskrit origin which are loanwords in the Thai language and to explore the effects of using WordWall gamification for English words of Sanskrit origin in Thai learning. The samples consisted of seven master's degree students who were studying the Thai language in course number 01361513 Foreign Languages in Relation to the Thai language at Kasetsart University in academic year 2022. Quantitative data analysis was used in this research. The findings revealed that Sanskrit and English have a very close relation to each other because they come from the same IndoEuropean language family. The root-words were considered to simplify the relations of Sanskrit and English. Using WordWall gamification for English words of Sanskrit origin in Thai learning is a good adjunct tool for the implementation of improvement of word identification skills. Pre-test, post-test and intervention data indicated development of the students' ability to deal with English words of Sanskrit origin in Thai learning and an increase in the students' identification skills. This WordWall gamification should be introduced to Thai classrooms because it helped to effect good learning of English words of Sanskrit origin that are loanwords in the Thai language and the excellent effects of using the WordWall gamification were undoubtedly found in the post-test.