killer

1 of 2

noun

kill·​er ˈki-lər How to pronounce killer (audio)
1
: one that kills
2
3
a
: one that has a forceful, violent, or striking impact
b
: one that is extremely difficult to deal with

killer

2 of 2

adjective

1
: strikingly impressive or effective
a killer smile
a killer résumé
2
: extremely difficult to deal with
a killer fastball
also : causing death or devastation
a killer tornado

Examples of killer in a Sentence

Noun Heart disease is the leading killer of both men and women. The chemical is used as a weed killer. Adjective killer viruses that claimed millions of lives a killer exercise program guaranteed to whip you into shape
Recent Examples on the Web
Noun
In May 2023, Whitfield and other relatives of those killed in the Buffalo attack filed a lawsuit in State Supreme Court in Buffalo in an attempt to hold several social media companies responsible for aiding the killer in his attack. Bill Hutchinson, ABC News, 13 May 2024 The killers, for the most part, came from the Hutu majority — some were formally in the military, but many were part of paramilitary organizations called the interahamwe. Tinbete Ermyas, NPR, 13 May 2024 See all Example Sentences for killer 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'killer.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

Noun

15th century, in the meaning defined at sense 1

Adjective

1951, in the meaning defined at sense 1

Time Traveler
The first known use of killer was in the 15th century

Dictionary Entries Near killer

Cite this Entry

“Killer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/killer. Accessed 16 May. 2024.

Kids Definition

killer

1 of 2 noun
ˈkil-ər
1
: one that kills
2

killer

2 of 2 adjective
1
: strikingly impressive or effective
a killer smile
2
: extremely difficult
a killer exam
also : causing death or devastation
a killer tornado

More from Merriam-Webster on killer

Last Updated: - Updated example sentences
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