reach the end of (your) tether

British, American & Australian, American

be at the end of (your) tether - to be so tired, worried, or annoyed by something that you feel unable to deal with it any more.

She finally reached the end of her tether and told him exactly what she thought of his behaviour.

• the balloon goes up
• the bandwagon effect
• the bane of life
• the bane of your life
• the bare bones
• the battle lines are drawn
• the battle of the sexes
• the be-all and end-all
• the beau monde
• the beauty of
• the beauty of something
• the beginning of the end
• the best of both worlds
• the best of the best
• the best of the lot
• the best thing since sliced bread
• the better part of
• the better part of something
• the Bible Belt
• the big daddy
• the bigger they are, the harder they fall.
• the big picture
• the big smoke
• the big time
• the bird has flown.