This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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pronoun. Used to indicate the one or ones belonging to thee.

adj. Used instead of thy before an initial vowel or h: "The presidential candidates are practicing the first rule of warfare: know thine enemy” ( Eleanor Clift).

determiner. Singular second person prevocalic possessive determiner (preconsonantal form: thy).

pronoun. Singular second person possessive pronoun.

preposition. A form of the possessive case of the pronoun thou, now superseded in common discourse by your, the possessive of you, but maintaining a place in solemn discourse, in poetry, and in the usual language of the Friends, or Quakers.

Of thee; the original genitive of the pronoun thou.

Of thee; belonging to thee. Compare mine, 2.

Belonging or pertaining to thee: in this sense a possessive.

Used attributively, with the force of an adjective: commonly preferred before a vowel to thy, and now used only in that situation.

"Before a noun beginning with a vowel thine and mine are commonly substituted for thy and my, as in “thine eyes” and “mine infirmity."

mine and thine    thy    thou    your    thee    yours   

tuum   

Aline    Cline    Combine    Dine    Heine    Jain    Klein    Kline    Quine    Rhine   

thy    heavenly    earthly    eternal    dear    mighty    royal    precious    hers    our