LIBRETTOlibretto · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:LIBRETTOTier 1Ordinal101Pythagorean38Classical96Reverse115Reverse Reduction52Standard1048Final Large1048Ordinal94Reduced22Atbash445Isopsephy817Ordinal106Abjad1049