stag·ger·ing 
/ˈstægərɪŋ/ adjective
/ˈstægərɪŋ/ adjective [more staggering; most staggering] : very large, shocking, or surprising
▪ staggering medical bills ▪ The storm caused a staggering amount of damage.
▪ staggering medical bills ▪ The storm caused a staggering amount of damage.
— stag·ger·ing·ly adverb
▪ The bills are staggeringly large.
▪ The bills are staggeringly large.
