waver

To swing or wave, especially in the air, wind, etc.; to flutter.

To move without purpose or a specified destination; to roam, to wander.

To sway back and forth, as if about to fall; to reel, to stagger, to totter.

To begin to weaken or show signs of weakening in resolve; to falter, to flinch, to give way.

To feel or show doubt or indecision; to be indecisive between choices; to vacillate.

Of a body part such as an eye or hand, or the voice: to become unsteady; to shake, to tremble.

Of light, shadow, or a partly obscured thing: to flicker, to glimmer, to quiver.

Chiefly of a quality or thing: to change, to fluctuate, to vary.

Followed by from: to deviate from a course; to stray, to wander.

Of the wits: to become confused or unsteady; to reel.