WordReference Random House Unabridged Dictionary of American English © 2025
un•de•fined
(un′di fīnd′),USA pronunciation adj.
un•de•fin•ed•ly
(un′di fī′nid lē, -fīnd′-),USA pronunciation adv.
un′de•fin′ed•ness, n.
- without fixed limits; indefinite in form, extent, or application:undefined authority; undefined feelings of sadness.
- not given meaning or significance, as by a definition;
not defined or explained:an undefined term.
- un-1 + defined 1605–15
'undefined' also found in these entries (note: many are not synonyms or translations):