the dead of night

the dead of night

the quietest, darkest part of the night.
See also: dead, night, of

(in) the ˌdead of (the) ˈnight

,

at ˌdead of ˈnight

in the quietest, darkest hours of the night: She crept in at dead of night, while they were asleep. OPPOSITE: in broad daylight
See also: dead, night, of