noun. the propensity of very young kids to continue the utilization of a term past the field of its particular connotation, for instance, by referencing all animals as doggie.

OVEREXTENSION: "Savannah's over-extension of the word kitty started with referring to other felines like tigers, but she now references the term to describe everything from any four-legged animal, to any non-animal furry object, like a pillow."
Cite this page: N., Pam M.S., "OVEREXTENSION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/overextension/ (accessed October 21, 2021).