wavering

Wavering is the act of moving unsteadily between two or more positions or states, or of being uncertain or indecisive in judgment. The term is used across physical, cognitive, and metaphorical contexts to describe fluctuation or instability.

In a physical sense, something wavering may flicker, tremble, or sway, such as a candle flame in a draft or a light beam affected by interference. The motion is typically rapid and often rhythmic, reflecting external or internal perturbations.

In psychology and decision making, wavering describes hesitation, indecision, or internal conflict that prevents firm conclusions or actions. Causes include incomplete information, risk aversion, fatigue, and emotional factors. Wavering can be adaptive, allowing more information gathering, or maladaptive if it delays action.

In speech or writing, a voice or argument may waver, signaling doubt or tentativeness. Wavering can shape how others perceive confidence and credibility, and may invite clarification or further discussion.

Etymology: the verb originates in English, with historical use dating to the Middle Ages.

Related terms include flutter, tremor, oscillation, and hesitation.