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assiduous

as·sid·u·ous

assiduous

pronunciation:
sI ju ihs
part of speech: adjective
definition 1: persistent and unremitting; constant.
A stricter law against drunk driving was brought about by assiduous campaigning on the part of citizens.
synonyms:
constant, diligent, persistent, unremitting
antonyms:
intermittent, spotty
definition 2: persevering and tireless; diligent.
These assiduous scholars produced a vast body of work.
synonyms:
diligent, pertinacious, sedulous, tireless
antonyms:
inconstant, indolent, lazy
similar words:
laborious
derivations: assiduously (adv.), assiduity (n.), assiduousness (n.)