proficient

[pruh-fish-uhnt]
adjective
1.
well-advanced or competent in any art, science, or subject; skilled: a proficient swimmer.
noun
2.
an expert.

Origin:
1580–90; < Latin prōficient- (stem of prōficiēns) present participle of prōficere to advance, make progress, equivalent to prō- pro-1 + -ficere, combining form of facere to make, do1. See -ent, efficient

proficiently, adverb
proficientness, noun
overproficient, adjective
overproficiently, adverb
underproficient, adjective


1. adept, competent, experienced, accomplished, able, finished.


1. unskilled, inept.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To proficiently
Collins
World English Dictionary
proficient (prəˈfɪʃənt)
 
adj
1.  having great facility (in an art, occupation, etc); skilled
 
n
2.  an archaic word for an expert
 
[C16: from Latin prōficere to make progress, from pro-1 + facere to make]
 
pro'ficiency
 
n
 
pro'ficiently
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

proficient
1580s, from L. proficientem (nom. proficiens), prp. of proficere "to make progress, be useful" (see proficiency).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Except for one big disadvantage: bows require a high degree of skill to use
  proficiently.
The author theorizes proficiently with many philosophical models.
Eye drops must be proficiently instilled to prevent infections following
  cataract surgery.
Read and comprehend complex literary and informational texts independently and
  proficiently.
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