Main Entry:

as·sid·u·ous

Pronunciation:

\ə-ˈsij-wəs, -ˈsi-jə-\

Function:

adjective

Etymology:

Latin assiduus, from assidēre

Date:

1622

: marked by careful unremitting attention or persistent application <an assiduous book collector> <tended her garden with assiduous attention>

synonyms see busy

— as·sid·u·ous·ly adverb

— as·sid·u·ous·ness noun