as old as the hills
The phrase "as old as the hills" is idiomatic and means to portray something or someone as being very old or ancient. It suggests that the subject has been in existence for a very long time, comparable to the age of hills, which are considered one of the oldest geological formations on Earth.
Just Saying will “sweep you off your feet” with challenges to complete English language idioms, sayings, and other colloquial phrases.
Includes English phrases for both younger and older players. The full version features over 3,000 English idioms.