US /ˈɡɹæn(d)ˌfɑðɚ/ UK /ˈɡɹæn(d)ˌfɑːðə(r)/
noun verb Freq #1914

Meanings

  1. 1
    noun

    The father of your father or mother.

    I called my grandfather on the phone.

  2. 2
    verb

    To let someone or something keep old rules or privileges after new rules are introduced.

    Existing members were grandfathered in at the old, lower price.

Thesaurus

Synonyms
1 noun · the father of your father... grandad
2 verb · to let someone or something... grandfather in
More ayleelderfathereldfathergoodsiregrampgrampagrampopgrampsgrangrandagrandaddy
Word family
Forms grandfatheredgrandfatheringgrandfathers
Derived forms co-grandfathergilfgrandfather-in-lawgrandfatherhoodgrandfatherishgrandfatherismgrandfatherlessgrandfatherlygrandfathershipgreat-grandfathergreat-great-grandfatherstepgrandfather

Etymology

The noun is derived from Middle English grandfadre, graundfadir, graunfadir, grauntfader, and other forms, from graunt (“big, large; great, important”) + fā̆der (“male parent, father; remoter male ancestor”), probably modelled after Middle French grandpere, grant pere (“male parent; remoter male ancestor”) (whence French grand-père); the English word is analysable as grand- + father. Superseded earlier eldfather, elderfather. The verb is derived from the noun.

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