What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Used vs Undefined - What's the difference?

used | undefined |

As adjectives the difference between used and undefined

is that used is that is or has or have been used while undefined is lacking a definition or value.

As a verb used

is (use).

used

English

Verb

(head)
  • (use)
  • * 1948 , , North from Mexico / The Spanish-Speaking People of The United States , J. B. Lippincott Company, page 75
    • In 1866 Colonel J. F. Meline noted that the rebozo had almost disappeared in Santa Fe and that hoop skirts, on sale in the stores, were being widely used .
    You used me!
  • (intransitive, as an auxiliary verb, now only in past tense) to perform habitually; to be accustomed [to doing something]
    • He used to live here, but moved away last year.

    Adjective

    (en adjective)
  • That is or has or have been used.
  • * {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)
    • , title= Boundary problems , passage=Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month.}}
  • That has or have previously been owned by someone else.
  • Familiar through use; usual; accustomed.
  • * 1965 , (Bob Dylan), (Like a Rolling Stone)
    • Nobody's ever taught you how to live out on the street and now you're gonna have to get used to it.

    Synonyms

    * (having been used) * (previously owned by someone else) pre-owned, second-hand

    Antonyms

    * (having been used) unused * (previously owned by someone else) new

    Derived terms

    * usedness * well-used

    See also

    * used to

    Statistics

    *

    Anagrams

    * English heteronyms

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined