Word.ws English Dictionary

killer app

killer app noun: a killer application.

Noun

killer app (plural killer apps)

  1. (informal) A killer application.

Forms of killer app

pluralkiller apps

Questions about killer app

What does killer app mean?
Killer app means a killer application.
What part of speech is killer app?
Killer app is a noun.
What is the plural of killer app?
The plural of killer app is killer apps.

Words near killer app in the dictionary

  1. Killenaule
  2. Killenberg
  3. Killenbergs
  4. Killens
  5. killer
  6. killer app
  7. killer application
  8. killer applications
  9. killer apps
  10. killer bee
  11. killer bees

Source and license

Adapted from Wiktionary: killer app (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “killer app.” Word.ws, https://word.ws/killer_app. Based on Wiktionary, CC BY-SA 4.0.