1
general::
Phrase(s): hit (rock) bottom
Go to (rock) bottom., Phrase(s): hit bottom
Fig. to reach the lowest or worst point. • Our profits have hit bottom. This is our worst year ever. • When my life hit bottom, I began to feel much better. I knew that if there was going to be any change, it would be for the better.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Also, touch bottom. Reach the worst or lowest point. For example, When he lost his job again they knew they had hit bottom, or When wheat prices touch bottom, the farmers will be up in arms. [Second half of 1800s]
American Heritage Idioms