: of or relating to thee or thyself especially as possessor or agent or as object of an action
used especially in ecclesiastical or literary language and sometimes by Friends especially among themselves

Word History


Middle English thin, thy, from Old English thīn, genitive of thū thou — more at thou

First Known Use

12th century, in the meaning defined above

Time Traveler
The first known use of thy was in the 12th century

Dictionary Entries Near thy

Cite this Entry

“Thy.” Dictionary, Merriam-Webster, Accessed 5 Dec. 2023.

Kids Definition


: of, relating to, or done by or to thee or thyself

More from Merriam-Webster on thy

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!