ancient as the hills

(as) ancient as the hills

Very old. Oh, she's ancient as the hills, she can't hear us. Why don't we ever sing new songs? Those hymns are as ancient as the hills.
See also: ancient, hill
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

ancient (or old) as the hills

of very long standing or very great age.
Hills are used in the Bible as a metaphor for permanence.
See also: ancient, hill
Farlex Partner Idioms Dictionary © Farlex 2017
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