Third-person singular simple present indicative form of loose. (verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "looseth" in a sentence
"And agane, I say, any unlearned man, and not exercised in the woord of God, nor yit constant in his faith, whatsoever estaite or order he be of; I say, he hath no power to bynd or loose, seing he wanteth the instrument by the which he bindeth or looseth, that is to say, the word of God."
"Quoth the saw ‘Whoso looseth his sight wearieth his sprite.’"
"And only the dragon is a-feared when he heareth his voice, and fleeth into a den, and may not suffer the smell thereof; and faileth in himself, and looseth his comfort."