Synonyms for killer

Noun

1. killer, slayer, person, individual, someone, somebody, mortal, human, soul

usage: someone who causes the death of a person or animal

2. cause of death, killer, causal agent, cause, causal agency

usage: the causal agent resulting in death; "heart disease is the biggest killer in the United States"

3. killer, difficulty

usage: a difficulty that is hard to deal with; "that exam was a real killer"

4. killer whale, killer, orca, grampus, sea wolf, Orcinus orca, dolphin

usage: predatory black-and-white toothed whale with large dorsal fin; common in cold seas