Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

ruinous

play
adjective ru·in·ous \ˈrü-ə-nəs\

Simple Definition of ruinous

  • : causing or likely to cause damage or destruction

  • : costing far too much money

  • : falling apart : badly damaged

Full Definition of ruinous

  1. 1 :  dilapidated, ruined

  2. 2 :  causing or tending to cause ruin

ru·in·ous·ly adverb
ru·in·ous·ness noun

Examples of ruinous

  1. The house has fallen into a ruinous state.

  2. <a ruinous miscalculation of the financial markets left them bankrupt>



14th Century

First Known Use of ruinous

14th century



Seen and Heard

What made you want to look up ruinous? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 13, 2016

a trying or distressing experience

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

196.5 pounds 100 pounds 2.2 pounds 16.96 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ