Use "strenuousness" in a sentence
1. 1 synonym for Arduousness: strenuousness
2. Arduousness: 1 n extreme effortfulness Synonyms: strenuousness Type of: effortfulness the quality of requiring deliberate effort
3. Synonyms for Arduousness include difficulty, laboriousness, onerousness, operoseness, rigorousness, strenuousness, arduity, toughness, painfulness and hardness