determiner
thy
THEYE
determiner
1
An old-fashioned or poetic word for "your," used with a singular person you are addressing.
"Honor thy father and thy mother."
"Thy kingdom come, thy will be done."
How to Use Thy
Learner’s notesIn plain EnglishAn old way of saying "your," found in older English, prayers, and poetry.
Common mistake
Modern English no longer uses "thy" in everyday speech — it survives mainly in religious texts, Shakespeare, and deliberately archaic writing.
Memory tip
Use "thy" before a consonant sound and "thine" before a vowel sound, mirroring how "a" and "an" work today.
Trace the full origin ↓
Common pairings
thy will
thy name
thy kingdom
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Honor _____ father and thy mother.
Etymology
From Middle English "thi," a worn-down form of "thin," the old possessive of "thou" — the archaic singular counterpart to modern "you."