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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
ef·fort·ful    Audio Help   [ef-ert-fuhl] Pronunciation Key
–adjective
marked by effort or exertion; labored.

[Origin: 1895–1900; effort + -ful]

ef·fort·ful·ly, adverb
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Encyclopædia Britannica, Inc.
effortful

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© 2008 Encyclopædia Britannica, Inc.
American Heritage Dictionary - Cite This Source - Share This
ef·fort    Audio Help   (ěf'ərt)  Pronunciation Key 
n.  
  1. The use of physical or mental energy to do something; exertion.
  2. A difficult exertion of the strength or will: It was an effort to get up.
  3. A usually earnest attempt: Make an effort to arrive promptly.
  4. Something done or produced through exertion; an achievement: a play that was his finest effort.
  5. Physics Force applied against inertia.


[Middle English, from Old French esfort, from esforcier, to force, exert, from Medieval Latin exfortiāre : Latin ex-, ex- + Latin fortis, strong; see bhergh-2 in Indo-European roots.]

ef'fort·ful adj., ef'fort·ful·ly adv.
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
WordNet - Cite This Source - Share This
effortful

adjective
requiring great physical effort [ant: effortless

WordNet® 3.0, © 2006 by Princeton University.
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