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also gran·dad·dy (grăn′dăd′ē)
n. pl. grand·dad·dies also gran·dad·dies Informal
1. A grandfather.
2. One that is the first, oldest, or most respected of its kind: the granddaddy of modern computers.


(ˈgrænˌfɑ ðər, ˈgrænd-)

1. the father of one's father or mother.
2. a male ancestor.
grand′fa`ther•ly, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.granddaddy - the father of your father or mothergranddaddy - the father of your father or mother
grandparent - a parent of your father or mother
References in periodicals archive ?
A party promoter since the 1980s--when he got his start with Studio 54's Steve Rubell and Ian Schrager--Sanker has for 12 years organized one of the granddaddies of circuit parties, the White Party in Palm Springs, Calif.
More than 25 years old, Wilderness Southeast is one of the granddaddies of the eco-tourism movement.
In naming Penton's email newsletter to the Media Power 50 list, the BtoB Magazine called Windows IT Pro UPDATE "one of the granddaddies of them all: It started in 1998 and reaches 145,000 registered users.