assiduously

assiduous

[uh-sij-oo-uhs]
adjective
1.
constant; unremitting: assiduous reading.
2.
constant in application or effort; working diligently at a task; persevering; industrious; attentive: an assiduous student.

Origin:
1530–40; < Latin assiduus, equivalent to assid(ēre) to sit near, beside, dwell close to (see assess) + -uus deverbal adj. suffix; see -ous

assiduously, adverb
assiduousness, noun
unassiduous, adjective
unassiduously, adverb
unassiduousness, noun


1. continuous, tireless, persistent. 2. studious, diligent, sedulous.


1, 2. inconstant, lazy.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
assiduous (əˈsɪdjʊəs)
 
adj
1.  hard-working; persevering: an assiduous researcher
2.  undertaken with perseverance and care: assiduous editing
 
[C16: from Latin assiduus sitting down to (something), from assidēre to sit beside, from sedēre to sit]
 
as'siduously
 
adv
 
as'siduousness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

assiduous
1530s, from L. assiduus "busy, incessant, continual, constant," from assidere "to sit down to," thus "constantly occupied" at one's work; from ad "to" + sedere "to sit" (see sedentary). The word acquired a taint of "servility" in 18c.
Online Etymology Dictionary, © 2010 Douglas Harper
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