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Grandfather vs Undefined - What's the difference?

grandfather | undefined |

As a noun grandfather

is a father of someone’s parent.

As a verb grandfather

is to retain existing laws or rules only for those people or organisations that were previously affected by them, and apply new laws or rules to the unaffected people or organizations.

As an adjective undefined is

lacking a definition or value.

grandfather

English

Etymology 1

(wikipedia grandfather)

Noun

(en noun)
  • A father of someone’s parent.
  • (by extension) A male forefather.
    • Synonyms
    * granddad, grandad, grandaddy * grandsire * grandpa, granpa, grandpappy, granpappy, gramps * eldfather/elderfather * pops
    Antonyms
    * (with regard to gender) grandmother * (with regard to ancestry) grandson, granddaughter, grandchild
    Hyponyms
    * paternal grandfather * maternal grandfather
    Hypernyms
    * grandparent
    Derived terms
    * grandfather clock * grandfather clause * great grandfather, great-grandfather

    Etymology 2

    From (m). See etymology 1 and (m).

    Verb

    (en verb)
  • To retain existing laws or rules only for those people or organisations that were previously affected by them, and apply new laws or rules to the unaffected people or organizations.
    • Derived terms
    * (l) 1000 English basic words

    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