Thesaurus

(n) : an unsteady movement of the body in walking or standing, as if one were about to fall; a reeling motion; vertigo; -- often in the plural; as, the stagger of a drunken man; a disease of horses and other animals, attended by reeling, unsteady gait or sudden falling; as, parasitic staggers; apoplectic or sleepy staggers

(v) : to move to one side and the other, as if about to fall, in standing or walking; not to stand or walk with steadiness; to sway; to reel or totter; to cease to stand firm; to begin to give way; to fail