Real Dictionary

stagger
verb: If something staggers you, it surprises you very much.
verb: If you say that someone or something staggers on, you mean that they only just succeed in continuing.
verb: If you stagger, you walk very unsteadily, for example because you are ill or drunk.
verb: To stagger things such as people's holidays or hours of work means to arrange them so that they do not all happen at the same time.

stagger in American English
to cause to stagger, as with a blow
to move unsteadily, as though about to collapse; totter, sway, or reel, as from a blow, fatigue, drunkenness, etc.
intransitive verb: to walk, move, or stand unsteadily
noun: the act of staggering; a reeling or tottering movement or motion
transitive verb: to cause to reel, totter, or become unsteady