Definition of undefined
: not defined : such asa : not clearly or precisely shown, described, or limited <undefined rules> <undefined powers> <a vague, undefined feeling of dread> < … the true outlines of Clinton's foreign policy remain undefined. — William Greider>b : not provided with a definition <an undefined dictionary entry>
First Known Use of undefined
Seen and Heard
What made you want to look up undefined? Please tell us where you read or heard it (including the quote, if possible).