us·a·ble

[yoo-zuh-buhl]
adjective
1.
available or convenient for use: 2000 square feet of usable office space.
2.
capable of being used: That saw is no longer usable.
Also, useable.


Origin:
1350–1400; Middle English < Middle French; see use, -able

us·a·bil·i·ty, us·a·ble·ness, noun
us·a·bly, adverb
non·re·us·a·ble, adjective, noun
non·us·a·ble, adjective
re·us·a·bil·i·ty, noun
re·us·a·ble, adjective
re·us·a·ble·ness, noun
un·us·a·ble, adjective
un·us·a·ble·ness, noun
un·us·a·b·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To unusable
00:10
Unusable is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a stew of meat, vegetables, potatoes, etc.
Collins
World English Dictionary
unusable (ʌnˈjuːzəbəl) [Click for IPA pronunciation guide]
 
adj
not able or fit to be used

usable or useable (ˈjuːzəbəl) [Click for IPA pronunciation guide]
 
adj
able to be used
 
useable or useable
 
adj
 
usa'bility or useable
 
n
 
usea'bility or useable
 
n
 
'usableness or useable
 
n
 
'useableness or useable
 
n
 
'usably or useable
 
adv
 
'useably or useable
 
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

usable
1382, from O.Fr. usable (1311), from user (see use). Not a common word before c.1840.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
Silicone is indeed incredibly common--and unusable in its natural form.
In both cases, these issues threaten to make land unusable for indefinite
  periods, possibly up to thousands of years.
We can take resources thought mere decades ago to be unusable and now extract
  them.
The lift-shaft of an unfinished high-rise hotel on the waterfront was filled
  with concrete to render the building unusable.
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