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granddaddy of them all

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granddaddy of them all

The first, oldest, or most respected of its kind, as in That computer is the grandaddy of them all. [Colloquial; c. 1900]

See also: all, granddaddy, of

(grand)daddy (of them all)

n. the biggest or oldest of all; the patriarch. This old fish is the granddaddy of them all.

See also: all, granddaddy, of