Assiduousness
Word Structure
WordHub has a local lexical record for “Assiduousness” with pronunciation and root analysis.
as-
to, toward, addition to, nearness
Forms: ad, ac, af, ag, al, an
sid
to sit
Forms: sed, sid, sess
-ous
having the qualities of, full of
Forms: ous, eous, ious
-ness
forming an abstract noun that denoting action, quality, or state
Forms: ness, esse, ice