Found 2 items, similar to assiduousness.
English → English (WordNet) Definition: assiduousness assiduousness n : great and constant diligence and attention [syn: assiduity, concentration]
English → English (gcide) Definition: Assiduousness Assiduous \As*sid"u*ous\, a. [L. assiduus, fr. assid?re to sit near or close; ad + sed[=e]re to sit. See Sit.] 1. Constant in application or attention; devoted; attentive; unremitting. [1913 Webster] She grows more assiduous in her attendance. --Addison. [1913 Webster] 2. Performed with constant diligence or attention; unremitting; persistent; as, assiduous labor. [1913 Webster] To weary him with my assiduous cries. --Milton. [1913 Webster] Syn: Diligent; attentive; sedulous; unwearied; unintermitted; persevering; laborious; indefatigable. [1913 Webster] As*sid"u*ous*ly, adv. -- As*sid"u*ous*ness, n. [1913 Webster]