Assiduous Definition

ə-sĭjo͝o-əs
adjective
Showing or characterized by persistent attention or untiring application.
An assiduous worker who strove for perfection; did assiduous research before writing the book.
American Heritage
Done with constant and careful attention.
Webster's New World
Diligent; persevering.
Webster's New World

Hard-working, diligent or regular (in attendance or work); industrious.

Wiktionary
Antonyms:

Origin of Assiduous

  • From Latin assiduus from assidēre to attend to ad- ad- sedēre to sit sed- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin assiduus, from assidere (“to sit down to”), from ad- (“to”) + sedere (“to sit”).

    From Wiktionary

  • Cognate (via assidere) to assess.

    From Wiktionary

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