The motion of one who staggers.
"The staggering drunk stumbled out of the bar and fell into a puddle on the sidewalk."
present participle of stagger
"He stumbled and staggered forward, trying to regain his balance after hitting his head on the low doorframe."
so surprisingly impressive as to stun or overwhelm
"such an enormous response was astonishing"
"an astounding achievement"
"the amount of money required was staggering"
"suffered a staggering defeat"
"the figure inside the boucle dress was stupefying"
Incredible, overwhelming, amazing.
"The staggering height of the waterfall left everyone speechless as they gazed up at the misty cascade."