Sedulousness is often defined as persistent and diligent effort towards a task or goal. Synonyms that could be used in place of this word include industriousness, assiduousness, perseverance, and dedication. These words all imply a strong work ethic and a willingness to put forth a considerable amount of effort to get a job done. Other synonyms that could describe someone who displays sedulousness include conscientiousness, attentiveness, and thoroughness. These words all suggest a person who is highly focused and committed to achieving their goals. In short, synonyms for sedulousness are varied, but they all indicate a dedication to hard work and achieving success.