What is the meaning of staggering?

verb

• Walk as if unable to control one's movements.
  • usage: "The drunken man staggered into the room"
  • synonyms: stagger, reel, keel, lurch, swag, careen
• Walk with great difficulty.
  • usage: "He staggered along in the heavy snow"
  • synonyms: stagger, flounder
• To arrange in a systematic order.
  • usage: "stagger the chairs in the lecture hall"
  • synonyms: stagger, distribute
• Astound or overwhelm, as with shock.
  • usage: "She was staggered with bills after she tried to rebuild her house following the earthquake"
  • synonyms: stagger

adjective

• So surprisingly impressive as to stun or overwhelm.
  • usage: "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"
  • synonyms: astonishing, astounding, stupefying