1
general::
1. Understand, as in I take it they won't accept your proposal. [Early 1500s] 2. Endure abuse, criticism, harsh treatment, or unpleasantness, as in Tell me what you really think of me? I can take it. [Mid-1800s] This phrase is sometimes modified as take just so much, meaning "endure only up to a point." For example, I can take just so much of this nonsense before I lose patience. Also see TAKE IT ON THE CHIN; TAKE LYING DOWN. 3. Accept or believe something, as in I'll take it on the doctor's say-so. Also see the subsequent entries beginning with TAKE IT.
American Heritage Idioms
2
general::
Phrase(s): take it
to endure something, physically or mentally. (Often negative.) • I just can’t take it anymore. • If you can’t take it, quit.
McGrawhill's American Idioms And Phrasal Verbs