say it: uh-SI-dwuhs
assiduous is an adjective meaning "marked by care and persistent effort". It is pronounced /əˈsɪdwəs/ — uh-SI-dwuhs. It carries one recorded sense.
Definitions, synonyms and semantic relations for assiduous come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.