assiduity Meaning, Definition & Usage

  1. noun great and constant diligence and attention
    concentration; assiduousness.

WordNet

As`si*du"i*ty noun
Etymology
L. assiduitas: cf. F. assiduite. See Assiduous.
Wordforms
plural Assiduities
Definitions
  1. Constant or close application or attention, particularly to some business or enterprise; diligence.
    I have, with much pains and assiduity, qualified myself for a nomenclator. Addison.
  2. Studied and persevering attention to a person; -- usually in the plural.

Webster 1913