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We found 4 dictionaries that define the word undef:

General (3 matching dictionaries)
  1. undef: Wordnik
  2. undef: Wiktionary
  3. UNDEF: Dictionary.com

Miscellaneous (1 matching dictionary)
  1. UNDEF: Acronym Finder

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Definitions from Wiktionary (Undef)

▸ adjective:  (programming) Abbreviation of undefined. [Lacking a definition or value.]

Similar:
iterable, retval, lvalue, uninitialized, unset, dereferencing, iterator, filehandle, param, readline, more...

Opposite:
defined, clear, specific, certain

▸ Words similar to undef

▸ Usage examples for undef

▸ Idioms related to undef

▸ Wikipedia articles (New!)

▸ Popular nouns described by undef

▸ Words that often appear near undef

▸ Rhymes of undef

▸ Invented words related to undef

Similar:
iterable, retval, lvalue, uninitialized, unset, dereferencing, iterator, filehandle, param, readline, more...

Opposite:
defined, clear, specific, certain



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