Thou is an archaic second-person singular pronoun once used as the subject of verbs (e.g., thou art). In modern usage it’s primarily found in literature and historical texts, with occasional poetic or religious contexts. As a verb form, thou is rarely used in contemporary English outside of archaic style or dialectal speech; when found as a verb, it retains forms like thou wilt or thou art, but most modern readers interpret it as a linguistic variant rather than a common verb.
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