Thai

American  

[tahy] / taɪ /

adjective

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

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noun

Thais, plural Thai plural

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

Other Word Forms

Noun Inflected Forms

• Thai
  plural
• Thais
  plural

Etymology

Origin of Thai

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

Example Sentences

Another described Macron as "so charming" and said he had "completely won over Thai hearts with this".

From Barron's • Jul. 2, 2026

This prompts the brokerage to reduce its 2027 and 2028 earnings forecasts for the Thai company by 10% and 20%, respectively.

From The Wall Street Journal • Jul. 1, 2026

At an auction near Tokyo, Thai trader Kangyapat Yoosanong bids for a wagonful of plushies -- crucial items in her lucrative business selling Japanese used goods in her home country.

From Barron's • Jun. 17, 2026

Sriracha is my go-to condiment for a Thai coconut soup, also known as Tom Kha Phak.

From Salon • Jun. 13, 2026

“Sorry I couldn’t make anything tonight,” his mother said, tearing open the plastic bag that held their Thai takeout that night.

From "Anger Is a Gift" by Mark Oshiro