assiduous
UK /əˈsɪdjuːəs/ · US /əˈsɪd͡ʒu.əs/ adjective
- adjective Hard-working, diligent or regular (in attendance or work); industrious.
Synonyms
meticulous diligent sedulous dogged hardworking industrious notable studious painstaking worksome
Etymology
A learned borrowing from Latin assiduus, from assidere (“to sit down to”), from ad- (“to”) + sedere (“to sit”). Compare sedulous.
Cognate (via assidere) to assess.
Webster’s 1913
- adjective Constant in application or attention; devoted; attentive; unremitting.
- adjective Performed with constant diligence or attention; unremitting; persistent; as, assiduous labor.
Etymology [L. assiduus, fr. assid to sit near or close; ad + sed to sit. See Sit.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “assiduous”, CC BY-SA 4.0. Details