derpier; derpiest
informal + sometimes offensive; see usage paragraph below
: awkward, stupid, or foolish in appearance, behavior, or manner
Axolotls are Mexican salamanders with distinctive mane-like ears and a bit of a derpy grin. They fall into that so-goofy-they're-cute category, alongside penguins and golden retrievers.Nicole Stempak
My derpy donkey loves dragging all of my tack and brushes all over the yard.@EponaMom, on Reddit
Usage of Derpy

While derpy may be used affectionately, especially of animals, it is offensive when it implies or suggests that someone has a physical or intellectual disability.

Word History

Etymology

derp + -y entry 1

First Known Use

2008, in the meaning defined above

Time Traveler
The first known use of derpy was in 2008

Browse Nearby Words

Cite this Entry

“Derpy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/derpy. Accessed 7 Mar. 2026.

Last Updated: - Entry added
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster