sloppily UK /ˈslɒpɪli/US /ˈslɑpɪli/ adverb1 •In a sloppy manner, not neatly.[…] as soul-deadeningly, eye-strainingly, sleep-inducingly boring as going through fourteen file boxes of sloppily photostatted bank records. — 2008 formsmore sloppily · most sloppily