← BackshareGuessungummed/ʌnˈɡʌmd/adjectiveNot stuck or sealed with gum or adhesive; free from gum.Make sure the envelope flap is ungummed if you want to reuse it.The stamp was ungummed and wouldn't stick to the letter.She preferred ungummed labels that could be easily removed.SynonymsunstuckungluedAntonymsgummed