from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Constant in application or attention; diligent: an assiduous worker who strove for perfection. See Synonyms at busy.
- adj. Unceasing; persistent: assiduous research.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Hard-working, diligent or regular (in attendance or work); industrious.
from the GNU version of the Collaborative International Dictionary of English
- adj. Constant in application or attention; devoted; attentive; unremitting.
- adj. Performed with constant diligence or attention; unremitting; persistent.
from The Century Dictionary and Cyclopedia
- Constant in application; attentive; devoted: as, a person assiduous in his occupation; an assiduous physician or nurse.
- Constant; unremitting: applied to actions.
- Synonyms Sedulous, diligent, active, busy, constant, patient, persevering, laborious, unceasing, indefatigable, untiring. See assiduity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. marked by care and persistent effort
From Latin assiduus, from assidēre, to attend to : ad-, ad- + sedēre, to sit; see sed- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin assiduus, from assidere ("to sit down to"), from ad- ("to") + sedere ("to sit"). (Wiktionary)