The lowest level ever before reached or attained. Economists are panicking after the stock market reached an all-time low on Saturday. Our cash reserves are at an all-time low. We're going to need to take on a loan if the company is going to survive.
See also: low
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
all-time high (low)
A record achievement (or failure), never before surpassed. An Americanism from the early twentieth century, the term has been applied to matters economic (production), recreational (golf score), and numerous other areas.
See also: high
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer