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Unusual vs Undefined - What's the difference?

unusual | undefined |

As adjectives the difference between unusual and undefined

is that unusual is unlike what is expected; differing in some way from the norm while undefined is lacking a definition or value.

unusual

English

Alternative forms

* unusuall (obsolete)

Adjective

(en adjective)
  • Unlike what is expected; differing in some way from the norm.
  • *
    • , title=(The Celebrity), chapter=2 , passage=I had occasion […] to make a somewhat long business trip to Chicago, and on my return […] I found Farrar awaiting me in the railway station. He smiled his wonted fraction by way of greeting, […], and finally leading me to his buggy, turned and drove out of town. I was completely mystified at such an unusual proceeding.}}
  • Not usual.

    • Synonyms

    * (different from the expected) abnormal, rare, strange, weird, (stronger) extraordinary ** See also

    Antonyms

    * (different from the expected) normal, usual

    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