at the top of lungs

at the top of (one's) lungs

As loudly as one can. I've hardly slept because my infant has been crying at the top of her lungs all night. Sing at the top of your lungs so that the people in the last row of the auditorium can hear you!See also: lung, of, top

at the top of (one's) lungs

As loudly as one's voice will allow.See also: lung, of, top