THOU, pron. in the obj. thee. The second personal pronoun, in the singular number the pronoun which is used in addressing persons in the solemn style.
Art thou he that should come? Matthew 11
I will fear no evil, for thou art with me. Psalms 23
Thou is used only in the solemn style, unless in very familiar language, and by the Quakers.
THOU, To treat with familiarity.
If thou thouest him some thrice, it shall not be amiss.
THOU, To use thou and thee in discourse.
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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