1
as in headache
a dull, unpleasant, or difficult piece of work
weeding out that overgrown garden is going to be a killer
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in murderer
a person who kills another person
gunned down by hired killers
Synonyms & Similar Words
1
as in lethal
likely to cause or capable of causing death
killer viruses that claimed millions of lives
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in difficult
requiring considerable physical or mental effort
a killer exercise program guaranteed to whip you into shape
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of killer
Jon R. Lindsay, The Conversation, 11 Mar. 2026
What Capote did was remarkable—spending time with the two killers, talking to them in prison, witnessing their execution.
—The New Yorker, New Yorker, 11 Mar. 2026
These bots frequently featured killers’ full names and images, meaning their creators made no attempt to hide their existence from the platform.
—Maggie Harrison Dupré, Futurism, 11 Mar. 2026
Effective homemade weed killers can be made from vinegar, corn gluten meal, or boiling water.
—Lauren Landers, Better Homes & Gardens, 11 Mar. 2026
See All Example Sentences for killer
Noun
Popular ideas of killer robots and drone swarms tend to overstate the autonomy of AI systems and understate the role of human beings.
—Jon R. Lindsay, The Conversation, 11 Mar. 2026
What Capote did was remarkable—spending time with the two killers, talking to them in prison, witnessing their execution.
—The New Yorker, New Yorker, 11 Mar. 2026
These bots frequently featured killers’ full names and images, meaning their creators made no attempt to hide their existence from the platform.
—Maggie Harrison Dupré, Futurism, 11 Mar. 2026
Effective homemade weed killers can be made from vinegar, corn gluten meal, or boiling water.
—Lauren Landers, Better Homes & Gardens, 11 Mar. 2026
See All Example Sentences for killer
Recent Examples of Synonyms for killer
Noun
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One month into the partial government shutdown, hundreds of Transportation Security Administration workers going without full pay have quit, while others have taken unscheduled time off, prompting more travel headaches as a winter storm slams the Midwest and spring break travelers try to fly.—
Amanda Musa,
CNN Money,
16 Mar. 2026
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Sweating due to high heat can lead to dehydration, causing dizziness, headaches, dry mouth, and other symptoms.—
Mark Gurarie,
Verywell Health,
16 Mar. 2026
Noun
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These countries must make their duty clear to the invaders of our beloved homeland and the murderers of our people.—
Haley Ott,
CBS News,
12 Mar. 2026
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The closing sequence, where Scarpetta is chased through her home by the murderer, was filmed on the final day of shooting.—
Emily Zemler,
Los Angeles Times,
11 Mar. 2026
Adjective
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Her government is to scrap a lethal arms exports ban in the coming weeks to promote Japan's defense industry and cooperation with the United States and other friendly nations.—
Arkansas Online,
Arkansas Online,
19 Mar. 2026
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The Air Force now aims to translate those lessons into a portable, lethal system.—
Aamir Khollam,
Interesting Engineering,
19 Mar. 2026
Adjective
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Kansas played the Blue Devils close and made life difficult for Duke freshman Cameron Boozer, largely thanks to Flory Bidunga’s defense.—
Shreyas Laddha,
Kansas City Star,
16 Mar. 2026
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Parents in attendance shared appreciation for seeing teens connect with older adults, especially during a stage of life when meaningful conversation at home can sometimes feel more difficult.—
News Release,
San Diego Union-Tribune,
15 Mar. 2026
Noun
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The expansion also supports job growth, with the company now employing over 2,200 people across the state.—
Prabhat Ranjan Mishra,
Interesting Engineering,
16 Mar. 2026
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Your first childhood dream job was… A doctor like my mom or an archeologist like Indiana Jones.—
Anna Moeslein,
Glamour,
16 Mar. 2026
Noun
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Intense interest persists around his murder because the assassin has never been caught.—
Georg Szalai,
HollywoodReporter,
13 Mar. 2026
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Shapiro is Jewish and was targeted by a would-be assassin who firebombed the governor's mansion last year.—
John Wisely,
Freep.com,
13 Mar. 2026
Adjective
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The drink contained nearly five times what is considered a deadly amount of the opioid, court filings showed.—
Emily Mae Czachor,
CBS News,
17 Mar. 2026
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The strike came hours after Afghan officials said the two sides exchanged fire along their common border, killing four people in Afghanistan, as the deadliest fighting between the neighbors in years entered a third week.—
Arkansas Online,
Arkansas Online,
17 Mar. 2026
Adjective
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In his 12 seasons, the Mustangs have played a challenging independent schedule featuring many Class 3A and 4A programs.—
Rick Armstrong,
Chicago Tribune,
19 Mar. 2026
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This challenging late-season stretch comes with the Heat trying to avoid the play-in tournament for the first time in four years.—
Anthony Chiang,
Miami Herald,
18 Mar. 2026
Cite this Entry
“Killer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/killer. Accessed 19 Mar. 2026.
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