Meaning of “disastrous” in the English Dictionary

"disastrous" in British English

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disastrousadjective

uk /dɪˈzɑː.strəs/ us /dɪˈzæs.trəs/

C1 extremely bad or unsuccessful:

Such a war would be disastrous for the country.
This decision will have a disastrous impact on foreign policy.
His first attempt was disastrous.

More examples

  • Pollution can have disastrous effects on the delicately balanced ecosystem.
  • No matter how disastrous the situation there always seems to be a funny side to it.
  • I tried to repaint the kitchen walls with disastrous results.
  • After a disastrous first month in office, many people are beginning to wonder if the new president is up to the job.
  • The cumulative effect of using so many chemicals on the land could be disastrous.
disastrously
adverb uk /dɪˈzɑː.strəs.li/ us /dɪˈzæs.trəs.li/

Things began to go disastrously wrong.

(Definition of “disastrous” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"disastrous" in American English

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disastrousadjective

us /dɪˈzæs·trəs/

causing great harm, damage, or suffering:

It was a disastrous mistake which he lived to regret.
In 1837, there was a disastrous smallpox epidemic.

fig. Something that is disastrous is a complete failure:

His attempt to play the piano was disastrous.

(Definition of “disastrous” from the Cambridge Academic Content Dictionary © Cambridge University Press)