grandfather - definition and synonyms

verb [transitive] legal American 

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/ˈgræn(d)ˌfɑːðə(r)/
present tense
I/you/we/theygrandfather
he/she/itgrandfathers
present participlegrandfathering
past tensegrandfathered
past participlegrandfathered
  1. to arrange for someone or something not to be subject to a new law or regulation that applies to everyone or everything else

    If you submitted your forms prior to December 1 and you have already paid, you will be grandfathered in.