Second-person singular simple present form of show(verb)
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Use "showest" in a sentence
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"No! not any longer, old friend; for my soul is convinced by the tokens thou showest."
"Well, honest Murdoch, I take it on me to say, thou deservest to be upper-warden, since thou showest thyself twenty times better acquainted with the way of victualling honest gentlemen that are under misfortune, than thy principal."