ruinous

[roo-uh-nuhs]
adjective
1.
bringing or tending to bring ruin; destructive; disastrous: a ruinous war.
2.
fallen into ruin; dilapidated: a ruinous house.
3.
consisting of ruins: a ruinous city from antiquity.

Origin:
1350–1400; Middle English ruynouse < Latin ruīnōsus, equivalent to ruīn(a) ruin + -ōsus -ous

ruinously, adverb
ruinousness, noun
nonruinous, adjective
nonruinously, adverb
nonruinousness, noun
unruinous, adjective
unruinously, adverb
unruinousness, noun


1. calamitous, ravaging, devastating, catastrophic.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To ruinous
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World English Dictionary
ruinous (ˈruːɪnəs)
 
adj
causing, tending to cause, or characterized by ruin or destruction: a ruinous course of action
 
'ruinously
 
adv
 
'ruinousness
 
n

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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Example sentences
PPt can be an incredible tool when used correctly and ruinous if not.
Instead they were used to create a false financial system that is ruinous for
  our countries.
The downpour of the past two days has been ruinous to entertainment in the
  suburbs.
Given that cohort, presidential cowardice doesn't have ruinous effects.
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