Did you know?

Click any word in a definition or example to find the entry for that word

deadly

 - definition
 
Close

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.

more
adjective American English pronunciation: deadly /ˈdedli/ 
Word Forms
Close
adjectivedeadly
comparativedeadlier
superlativedeadliest

Related dictionary definitions

  1. 1
    able or likely to kill people

    This is a potentially deadly disease.

    a deadly weapon:

    The police charged him with possession of a deadly weapon.

    deadly to:

    Too many water changes can prove deadly to these delicate fish.

  2. 2
    [only before noun] complete

    A deadly silence followed her announcement.

  3. 3
    informal very boring

    the same old deadly routine

  4. 4
    always able to achieve the intended result, effect, or purpose

    Miller is a deadly shooter from the three-point line.

phrase

mom jeans

a style of loose-fitting jeans with a high waist, often considered unfashionable

BuzzWord Article

Open Dictionary

endies

Employed but with No Disposable Income or Savings: people who are in work but only earn just enough to live on

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog