1
2
: causing or tending to cause ruin
ruinously
adverb
ruinousness
noun
Examples of ruinous in a Sentence
The house has fallen into a ruinous state.
a ruinous miscalculation of the financial markets left them bankrupt
Recent Examples on the Web
The ruinous price increases that took place during the Biden-Harris administration do not get a mention.
—
Ramesh Ponnuru, Washington Post, 23 May 2026
The actors who especially come out on top here are Sturridge and Ford as the dueling counterpoints in this ruinous romantic triangle.
—Ryan Lattanzio, IndieWire, 20 May 2026
That’s a positive flag for an Eagles offense whose ruinous regression in the run game last season led to former OC Kevin Patullo’s ouster.
—Brooks Kubena, New York Times, 21 Apr. 2026
Its promise to jump on the AI gravy train, however, has seemingly left its ruinous financials in the rearview mirror.
—Victor Tangermann, Futurism, 16 Apr. 2026
See All Example Sentences for ruinous
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Ramesh Ponnuru, Washington Post, 23 May 2026
The actors who especially come out on top here are Sturridge and Ford as the dueling counterpoints in this ruinous romantic triangle.
—Ryan Lattanzio, IndieWire, 20 May 2026
That’s a positive flag for an Eagles offense whose ruinous regression in the run game last season led to former OC Kevin Patullo’s ouster.
—Brooks Kubena, New York Times, 21 Apr. 2026
Its promise to jump on the AI gravy train, however, has seemingly left its ruinous financials in the rearview mirror.
—Victor Tangermann, Futurism, 16 Apr. 2026
See All Example Sentences for ruinous
Cite this Entry
“Ruinous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruinous. Accessed 31 May. 2026.
Copy CitationKids Definition
ruinous
adjective
ru·in·ous
ˈrü-ə-nəs 
: causing or tending to cause ruin : destructive
ruinously
adverb
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