to be so worried or upset that you don't know what to do
être tellement préoccupé ou contrarié que vous ne savez plus quoi faire
"I'm at my wits' end trying to calm the kids down."
"Je suis à bout de nerfs en essayant de calmer les enfants."
to refresh oneself using something
a short and intensive course of study
to be extra kind to someone unpleasant to neutralize their n...
to directly compete or confront each other
to make a bad situation even worse
a simple and perfect solution to a complex problem