Guppy

//ˈɡʌpi// name, noun

name, noun ·Uncommon ·College level

Definitions

Noun
  1. 1
    A tiny freshwater fish, Poecilia reticulata, popular in home aquariums, that usually has a plain body and black or dark blue tail for the females and a more colorful tail for the males. The guppies can vary in size, but males are 4 cm (1.6”) and females are 7 cm (2.8”).

    "Fred kept a tank of guppies by the windowsill."

  2. 2
    small freshwater fish of South America and the West Indies; often kept in aquariums wordnet
  3. 3
    Any tiny fish. broadly

    "Throw that one back; it’s just a guppy!"

  4. 4
    A tube holding paintballs before they are loaded into the gun.

    "I reached into my pack and grabbed a guppy to reload. Pouring in the contents, I kept my eyes ahead as I was supposed to do."

  5. 5
    A hold across the palm of the hand rather than the fingertips.
Show 12 more definitions
  1. 6
    Acanthocephalus guppii
  2. 7
    Acanthocephalus reticulatus
  3. 8
    Girardinus guppii
  4. 9
    Girardinus petersi
  5. 10
    Girardinus poeciloides
  6. 11
    Girardinus reticulatus
  7. 12
    Haridichthys reticulatus
  8. 13
    Heterandria guppyi
  9. 14
    Lebistes poecilioides
  10. 15
    Lebistes reticulatus
  11. 16
    Poecilia poeciloides
  12. 17
    Poecilioides reticulatus
Proper Noun
  1. 1
    A surname.

Example

More examples

"Religion for many people is like being a guppy in a fishbowl. They do not really acknowledge that there are other fishbowls."

Etymology

From a name mistakenly assigned, Girardinus guppii, after biologist Robert J. L. Guppy, to previously assigned Poecilia reticulata.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.