octopi

English

Etymology

Formed on the (incorrect) assumption that the -us of Latin octopus was a second-declension case ending.

Noun

octopi

1. (nonstandard, hypercorrect) plural of octopus

   Synonyms: octopuses, octopodes (see more in main entry)

   • 2009, Keith Spicer, Paris Passions: Watching the French Being Brilliant and Bizarre, BookSurge, →ISBN, page 43:

     Cuddling is what an epidemic of lovers are doing all around us on this nippy, dazzling day. Entangled in each other like doting octopi, sweethearts are seizing the day, the hour, the magic minute.

Usage notes

The forms octopuses and octopi appear roughly equally prevalent, with octopodes being much rarer. However, octopi is nonstandard. See octopus for further discussion.