ARDUOUSNESSarduousness · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:ARDUOUSNESSTier 1Ordinal156Pythagorean39Classical148Reverse141Reverse Reduction69Standard452Final Large452Ordinal101Reduced47Atbash376Isopsephy1630Ordinal163Abjad454