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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of killer
Rosy Cordero,
Deadline,
29 June 2026
The three-time Grand Slam doubles champion has a varied game with a killer serve, and she won’t be intimidated by Świątek.
—
Ava Wallace,
New York Times,
29 June 2026
If cicada killer wasps are causing damage or posing a risk, call a professional pest control service for help.
—
Michelle Mastro,
Martha Stewart,
29 June 2026
However, the identity of the killer remains unknown, and the murder is one of the most famous unsolved murder cases, inspiring numerous books, films, and television shows.
—
Encyclopedia Britannica,
29 June 2026
See All Example Sentences for killer
Noun
Considering her Season 1 character Mia, aka Lady Vengeance, a serial killer by night and sommelier by day, was killed while jailed, is anyone’s guess.
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Rosy Cordero,
Deadline,
29 June 2026
The three-time Grand Slam doubles champion has a varied game with a killer serve, and she won’t be intimidated by Świątek.
—
Ava Wallace,
New York Times,
29 June 2026
If cicada killer wasps are causing damage or posing a risk, call a professional pest control service for help.
—
Michelle Mastro,
Martha Stewart,
29 June 2026
However, the identity of the killer remains unknown, and the murder is one of the most famous unsolved murder cases, inspiring numerous books, films, and television shows.
—
Encyclopedia Britannica,
29 June 2026
See All Example Sentences for killer
Recent Examples of Synonyms for killer
Noun
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That’s when the real headache for businesses began, as customs checks, border controls and reams of paperwork came into force.
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But the move enabled Florida to lock in what will be one of the best top-six forward groups in the league, slotting Brady Tkachuck into the left wing spot on the second line alongside center Sam Bennett and right wing Matthew Tkachuk that will cause opponents major headaches.
Noun
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There can be legitimate debate on immigration, but Trump veers into sinister areas of xenophobia of invading rapists and murderers.
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It was censored in France, and later linked to a real-life murderer.
Adjective
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The weather service also warns not to leave children or pets unattended in vehicles, as car interiors can reach lethal temperatures in a matter of minutes.
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At worst, the consequences can be lethal for mothers or babies.
Adjective
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Aviation experts said those conditions would have been difficult to navigate that evening when the helicopter, a Robinson R66, crashed in the Dawson Forest Wildlife Management Area.
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But traffic on the waterway remains a fraction of pre-war levels with different authorities vying to organize the transit of vessels, leaving operators with a difficult choice over which path to take.
Noun
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But shareholders have pushed back against hefty pay packages, which come during a period of upheaval in Hollywood that has been buffeted by job losses from media consolidation and outsourcing.
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Yet despite those struggles, South Africa, one of Africa’s leading industrial economies, remains a destination for migrants willing to take low-paying jobs in domestic work, security and agriculture.
Noun
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As a pirate assassin and post-apocalyptic warrior, Krem of the Yellow Hills connects with Aries.
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The report’s key finding was that an odd, angry, 24-year-old assassin, Lee Harvey Oswald, had acted alone, for reasons nobody could quite figure out.
Adjective
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At the same time, vaccination rates have declined, worrying experts that more people could become vulnerable to this potentially deadly but preventable infection.
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The suspect, who has not yet been identified by police, was arrested in connection with the deadly shooting of 22-year-old Nasir Majied on Friday, June 5.
Adjective
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Keeping your hair looking and feeling shiny can be challenging, but not with this hair kit.
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Los Angeles Fire Department Chief Jaime Moore said that fighting the fire had been extremely challenging.
Cite this Entry
“Killer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/killer. Accessed 1 Jul. 2026.
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