assiduity Synonyms

concentration assiduousness hard work tenacity stubbornness laboriousness sedulousness changelessness acidulousness sustainment steadfastness stamina sedulity resolve resolution pertinacity persistency persistence busyness specialisation zealousness stick-to-it-iveness regardfulness tirelessness painstakingness studiousness staying power effortfulness operoseness slogging ardour industriousness immutableness insistency attentiveness perseverance permanency energy endurance effort doggedness diligence devotion determination continuation constancy conservancy care attention application