BACK-FORMATIONback-formation · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:BACK-FORMATIONTier 1Ordinal128Pythagorean56Classical121Reverse223Reverse Reduction79Standard914Final Large2044Ordinal140Reduced41Atbash563Isopsephy1184Ordinal158Abjad836