Relating to Thailand (a Southeast Asian country) or its people, language, and culture; also the language spoken in Thailand.
From the Thai word 'ไทย' (Thai), possibly meaning 'free' or derived from an ethnic group name; used in English since European contact with Southeast Asia in the colonial era.
The word 'Thai' might actually mean 'free' in the Thai language itself—and Thailand is one of the few Southeast Asian countries never colonized by Europeans, making its name ironically fitting!
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