GRANDFATHERLY
Scrabble letter values: G2R1A1N1D2F4A1T1H4E1R1L1Y4 = 24
Definition
GRANDFATHERLY is the adverb form of GRANDFATHER.
noun GRANDFATHER: the father of your father or mother.
Synonyms of GRANDFATHER: gramps, granddad, grandad, granddaddy, grandpa