Vacillate
Part of speech: verb
Definition: To sway unsteadily from one side to the other; oscillate. To swing indecisively from one course of action or opinion to another.
Waver
Part of speech: verb
Definition: To sway back and forth; to totter or reel.To flicker, glimmer, quiver, as a weak light.To fluctuate or vary, as commodity prices or a poorly sustained musical pitch.To shake or tremble, as the hands or voice.To falter; become unsteady; begin to fail or give way.To be indecisive between choices; to feel or show doubt or indecision; to vacillate.
Part of speech: noun
Definition: An act of wavering, vacillating, etc.Someone who waves, enjoys waving, etc.Someone who specializes in waving (hair treatment).A tool that accomplishes hair waving.
Example sentence: Iraq is no diversion. It is a place where civilization is taking a decisive stand against chaos and terror, we must not waver.