資料來源 : pyDict

艱辛;奮鬥

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Arduousness \Ar"du*ous*ness\, n.
   The quality of being arduous; difficulty of execution.

資料來源 : WordNet®

arduousness
     n : extreme effortfulness [syn: {strenuousness}]