GRANDFATHERING
Scrabble letter values: G2R1A1N1D2F4A1T1H4E1R1I1N1G2 = 23
Definition
GRANDFATHERING is the present participle of GRANDFATHER.
noun GRANDFATHER: the father of your father or mother.
Synonyms of GRANDFATHER: gramps, granddad, grandad, granddaddy, grandpa