Thai

American  

[tahy] / taɪ /

adjective

1. Formerly Siamese.  of or relating to Thailand, its people, or their language.

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noun

plural

Thais,

plural

Thai

1. Also called Thailander.  a native or or inhabitant of Thailand, or a person of Thai descent.

2. the language of Thailand, a member of the Tai group of languages.

Thai British  

/ taɪ /

adjective

1. of, relating to, or characteristic of Thailand, its people, or their language

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noun

1. a native or inhabitant of Thailand

2. the language of Thailand, sometimes classified as belonging to the Sino-Tibetan family

Etymology

Origin of Thai

First recorded in 1800–10; from Thai; literally, “free,” a self-designation

Example Sentences

Allen Farnsworth, the general manager of SoCal Self Storage, operates one facility in Pasadena with a laundromat on-site and another in Hollywood that houses a Thai restaurant.

From The Wall Street Journal • Apr. 15, 2026

Thai Randolph’s Nile & Co. acquired As/Is and Goodful to help creators and athletes launch their own companies without the burden of constant promotion.

From The Wall Street Journal • Apr. 13, 2026

Top holdings include Thai Foods Group, which distributes poultry and other food stuffs in Thailand, and Brazilian energy companies Petroreconcavo and Petrobras.

From Barron's • Apr. 12, 2026

Thai Prime Minister Anutin Charnvirakul this week sent a congratulatory message, according to Myanmar state media, saying that under Min Aung Hlaing's "able leadership" the nations' relations would "grow from strength to strength".

From Barron's • Apr. 10, 2026

She takes me to the Thai market the next day to shop for material.

From "First They Killed My Father: A Daughter of Cambodia Remembers" by Loung Ung