thief /ˈθiːf/noun 3forms 2phrases 1 noun3 •a person who steals from others, usually in secret and without violenceTake heed to false harlots, and more, ye wot what. / If noise ye heare, / Looke all be cleare: / Least drabs doe noie thee, / And theeues destroie thee. — 1878 •One who carries out a theft.water-thieves and land-thieves — 1596 •(no longer used) A waster in the snuff of a candle.But hear you, my Worthy Brethren: do not you, where you see a thief in the candle, call presently for an extinguisher[…] — 1640 formsthiefs · thieves Phrases with thief time thiefSomething or someone that consumes an inordinate amount of time, especially without achieving anything productive.