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Thoughtless vs Undefined - What's the difference?

thoughtless | undefined |

As adjectives the difference between thoughtless and undefined

is that thoughtless is marked by or showing lack of due thought or care; careless while undefined is lacking a definition or value.

thoughtless

English

Adjective

(en adjective)
  • Marked by or showing lack of due thought or care; careless.
  • Inconsiderate, inattentive.
    • A thoughtless remark.
  • Lacking thought or consideration.
    • The debate turned into thoughtless bickering.

    Derived terms

    * thoughtlessly * thoughtlessness

    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