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Definitions

killer

[kil-er] / ˈkɪl ər /
NOUN
murderer
Synonyms
STRONG
assassin butcher executioner exterminator hunter slayer
WEAK
cut-throat gunman/woman gunperson hit man hit person hit woman

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Ahmad told her that those people had thought he was a killer, and that he didn’t know why.

From Slate • Apr. 19, 2026

The Texas college student casually referenced Luigi Mangione, the accused UnitedHealthcare CEO killer, during an online conversation with producers of “The Last Invention” podcast, according to screenshots shared with The Wall Street Journal.

From The Wall Street Journal • Apr. 16, 2026

In any case, popes don’t cheer wars, which are always a calamity—a result of failure and a killer of the innocent.

From The Wall Street Journal • Apr. 16, 2026

Then the stage lit up to show a carved-out cave in a cliffside, housing an absolutely killer all-femme backing band in the grotto and a full company of dancers in every hue of the Americas.

From Los Angeles Times • Apr. 13, 2026

I turned and broke out a killer smile.

From "Liar, Liar" by Gary Paulsen