Definition of fluctuate

• v. i. - To move as a wave; to roll hither and thither; to wave; to float backward and forward, as on waves; as, a fluctuating field of air.
• v. i. - To move now in one direction and now in another; to be wavering or unsteady; to be irresolute or undetermined; to vacillate.
• v. t. - To cause to move as a wave; to put in motion.