GRANDFATHER CLAUSEgrandfather clause · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:GRANDFATHER CLAUSETier 1Ordinal163Pythagorean73Classical156Reverse296Reverse Reduction98Standard1133Final Large1133Ordinal152Reduced44Atbash434Isopsephy1429Ordinal169Abjad1158