dan·​ger·​ous | \ ˈdān-jə-rəs How to pronounce dangerous (audio) ; ˈdān-jərs, -zhrəs\

Definition of dangerous

1 : involving possible injury, pain, harm, or loss : characterized by danger a dangerous job
2 : able or likely to inflict injury or harm a dangerous man

Keep scrolling for more

Other Words from dangerous

dangerously adverb
dangerousness noun

Choose the Right Synonym for dangerous

dangerous, hazardous, precarious, perilous, risky mean bringing or involving the chance of loss or injury. dangerous applies to something that may cause harm or loss unless dealt with carefully. soldiers on a dangerous mission hazardous implies great and continuous risk of harm or failure. claims that smoking is hazardous to your health precarious suggests both insecurity and uncertainty. earned a precarious living by gambling perilous strongly implies the immediacy of danger. perilous mountain roads risky often applies to a known and accepted danger. shied away from risky investments

Examples of dangerous in a Sentence

She got into a car accident while driving through a dangerous intersection. He often drives at dangerous speeds. The city can be a dangerous place to live. The storms may cause dangerous flooding. He is wanted for assault with a dangerous weapon. the most dangerous of drugs
See More

Recent Examples on the Web

The storm surge from Barry will be dangerous in some areas: between 1 and 6 feet along the southeastern Louisiana coast and into Mississippi. Eliza Barclay, Vox, "This map charts the course the storm has taken so far and shows NOAA’s best forecast for where it’s heading.," 12 July 2019 The water will be dangerous for all levels of swimmers, and may area beaches are closed. Leigh Morgan, al.com, "Here’s what Barry has got in store for Alabama," 12 July 2019 This could be dangerous for the Revolution, who have allowed 15 of 36 goals this season in the 76-90 minute interval. Jenna Ciccotelli, BostonGlobe.com, "The hottest team in MLS, the Revolution, streak into Washington," 11 July 2019 Swimmers should avoid north sides of piers, which are particularly dangerous. Anna Bauman, Detroit Free Press, "Dangerous swimming conditions expected along Lake Michigan today," 11 July 2019 This matters because the world economy is becoming more dangerous for MNCs. The Economist, "SecurityCompanies must get ready for a riskier world," 11 July 2019 This would have been even more dangerous than the Islamist theocracy President Carter helped install in Iran in 1978, which has plagued the entire Middle East ever since. Conrad Black, National Review, "A Strong U.S. Needs a Strong U.K.," 11 July 2019 Feeding your canine dog-safe ice cream also ensures that your pet isn’t accidentally eating chocolate or xylitol — two ingredients that can be extremely dangerous for dogs to eat. Kelli Bender, PEOPLE.com, "PetSmart Is Giving Out Free Dog-Friendly Sundaes to Pups to Celebrate National Ice Cream Month," 8 July 2019 While on a boat, alcohol is dangerous for passengers as well as the driver. Molly Korzenowski, Twin Cities, "How to keep friends, family — and dogs — safe this Fourth of July," 2 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dangerous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of dangerous

15th century, in the meaning defined at sense 1

History and Etymology for dangerous

see danger entry 1

Keep scrolling for more

Learn More about dangerous

Statistics for dangerous

Last Updated

15 Jul 2019

Look-up Popularity

Time Traveler for dangerous

The first known use of dangerous was in the 15th century

See more words from the same century

Keep scrolling for more

More Definitions for dangerous



English Language Learners Definition of dangerous

: involving possible injury, harm, or death : characterized by danger
: able or likely to cause injury, pain, harm, etc.


dan·​ger·​ous | \ ˈdān-jə-rəs How to pronounce dangerous (audio) , ˈdānj-rəs\

Kids Definition of dangerous

1 : involving possible harm or death : full of danger dangerous work
2 : able or likely to injure A chain saw is a dangerous tool.

Other Words from dangerous

dangerously adverb



Legal Definition of dangerous

1 : creating a risk of bodily injury a dangerous condition of a public building
2 : able or likely to inflict especially serious bodily injury a dangerous criminal with no regard for human life a dangerous animal also : deadly
3 : likely to engage in repeated criminal activity a dangerous offender

Note: The activity that an offender is likely to engage in need not involve violence in order for the offender to be deemed dangerous.

Keep scrolling for more

Comments on dangerous

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


to complain fretfully

Get Word of the Day daily email!

Test Your Vocabulary

What's that Smell?! Quiz

  • wide eyed dog smelling rose
  • Someone who is hircine smells like a:
True or False

Test your knowledge - and maybe learn something along the way.

Word Winder's CrossWinder

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!