Third-person singular present simple form of signify(verb)
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Use "signifieth" in a sentence
"The phrase, rendered into plain English, signifieth, cleaning his boots."
"To die for every tenet that serveth the ambition or profit of the clergy is not required; nor is it the death of the witness, but the testimony itself that makes the martyr: for the word signifieth nothing else but the man that beareth witness, whether he be put to death for his testimony, or not."
"Oh, that is my dear brother, Peter -- his name signifieth"