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killer

/ˈkɪlɚ/ adjective C2
  1. Excellent, very good, cool. (slang) · killer feature· killer view
  2. Causing death, destruction, or obliteration. · killer bee· killer robot
  3. Distressing, uncomfortable. · I had a killer headache this morning.
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From the library

“They take orders from the Head of the Pack, and not from any striped cattle-killer.
The Jungle Book, p. 6 · B2
He shall live to run with the Pack and to hunt with the Pack; and in the end, look you, hunter of little naked cubs--frog-eater--fish-killer--he shall hunt thee!
The Jungle Book, p. 6 · B2
“This cattle-killer said he would kill me in the Council because he had not killed me when I was a cub.
The Jungle Book, p. 26 · B2
“Do you think a snake-killer kills muskrats?” said Rikki-tikki scornfully.
The Jungle Book, p. 73 · B2

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.