at the end of one’s tether
(verb) to have no patience or energy to tolerate something anymore
Example Sentences:
After living with my messy roommate for 2 years, I was at the end of my tether so I moved out.
Kerry is at the end of her tether with her boyfriend, because he is always late for their dates.
Mike was at the end of his tether with his job, so he quit.
From the Blogs:
At the end of my tether over snails
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