American English
/ˌən.dɪˈfaɪnd̚/
3 syllables · Stress the third syllable.
Not clearly described, explained, or limited.
Practice out loudNot clearly described, explained, or limited.
The project still has an undefined purpose.
The border between the two areas is undefined.
Use undefined when something has not been made clear or fixed. It does not usually mean impossible.
undefined role · undefined boundaries · undefined purpose · undefined relationship
an undefined + noun
remain undefined
In mathematics, having no value that the rules allow.
The function is undefined at zero.
Division by zero is undefined in this system.
undefined value · undefined expression · undefined at zero
be undefined at + number or point
an undefined + mathematical expression
not decide, explain, or describe something clearly
The contract leaves several details undefined.