killer

(kilər)

noun

  1. a person, animal, or thing that kills, esp. one that kills habitually or wantonly
  2. killer whale
  3. Slang something devastating, difficult, hard to cope with, etc.
  4. Slang an extremely successful, impressive, exciting, etc. person or thing

adjective

  1. that kills or has the potential for killing: a killer storm
  2. Slang very difficult, hard to cope with, etc.
  3. Slang successful, impressive, exciting, etc.

See killer in American Heritage Dictionary 4

noun
  1. One that kills: a disease that was a killer of thousands; a killer of new ideas.
  2. Slang Something that is extremely difficult to deal with or withstand: an exam that was a real killer.
adjective
  1. Causing death or destruction: killer floods.
  2. Slang Having impressive or effective power or impact; formidable: had a killer smile; made killer profits.

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