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[th ahy] /ðaɪ/
the possessive case of thou (used as an attributive adjective before a noun beginning with a consonant sound):
thy table.
Compare thine.
Origin of thy
1125-75; Middle English; variant of thine


[th ou] /ðaʊ/
pronoun, singular, nominative thou; possessive thy or thine; objective thee; plural, nominative you or ye; possessive your or yours; objective you or ye.
Archaic except in some elevated or ecclesiastical prose. the personal pronoun of the second person singular in the nominative case (used to denote the person or thing addressed):
Thou shalt not kill.
(used by the Friends) a familiar form of address of the second person singular.
verb (used with object)
to address as “thou.”.
verb (used without object)
to use “thou” in discourse.
before 900; Middle English; Old English thū; cognate with German, Middle Dutch du, Old Norse thū, Gothic thu, Old Irish tú, Welsh, Cornish ti, Latin tū, Doric Greek tý, Lithuanian tù, OCS ty; akin to Sanskrit tvam; (v.) late Middle English thowen, derivative of the pronoun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for thy
Contemporary Examples
Historical Examples
  • It is a bad end for thee, Eric: to be choked in snow, and with all thy deeds to do.

    Eric Brighteyes H. Rider Haggard
  • Why wast thou, so richly gifted of the gods, to be taken from us in thy youth?

    Philothea Lydia Maria Child
  • Manifest my innocence; and if it be gold, thou shalt have thy desire.

  • “One of thy old doctors in barnacles, I trow,” said Stephen.

    The Armourer's Prentices Charlotte M. Yonge
  • Because he knew thee of old, and that our child would be certain of thy protection.

    Sweet Mace George Manville Fenn
British Dictionary definitions for thy


(usually preceding a consonant) (archaic) belonging to or associated in some way with you (thou): thy goodness and mercy Compare thine
Word Origin
C12: variant of thine


pronoun (subjective)
(archaic, dialect) refers to the person addressed: used mainly in familiar address or to a younger person or inferior
(usually capital) refers to God when addressed in prayer, etc
Word Origin
Old English thū; related to Old Saxon thū, Old High German du, Old Norse thū, Latin tū, Doric Greek tu


noun (pl) thous, thou
one thousandth of an inch. 1 thou is equal to 0.0254 millimetre
(informal) short for thousand
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for thy

possessive pronoun of 2nd person singular, late 12c., reduced form of þin (see thine), originally used before consonants except -h-. In 15c., used before vowels, too.



2nd nominative singular personal pronoun, Old English þu, from Proto-Germanic *thu (cf. Old Frisian thu, Middle Dutch and Middle Low German du, Old High German and German du, Old Norse þu, Gothic þu), from PIE *tu-, second person singular pronoun (cf. Latin tu, Irish tu, Welsh ti, Greek su, Lithuanian tu, Old Church Slavonic ty, Sanskrit twa-m).

Superseded in Middle English by plural form you (from a different root), but retained in certain dialects (e.g. Philadelphia Quakers). The plural at first was used in addressing superior individuals, later also (to err on the side of propriety) strangers, and ultimately all equals. By c.1450 the use of thou to address inferiors gave it a tinge of insult unless addressed by parents to children, or intimates to one another. Hence the verb meaning "to use 'thou' to a person" (mid-15c.).

Avaunt, caitiff, dost thou thou me! I am come of good kin, I tell thee! ["Hickscorner," c.1530]
A brief history of the second person pronoun in English can be found here.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for thy

this is it


The final crisis is here; the unavoidable has come; prepare for the worst: He held her hand fast and said ''This is it, kid'' (1942+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for thy




The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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