to become weaker or less certain:
Her voice wavered uncertainly.
The students' attention did not waver.
Harris never wavered in his loyalty.
We were determined not to waver from our goals.
to not make a decision because you have doubts:
Shareholders who were wavering met the directors.
waver between something and something
The party wavered between free trade and protectionism.
to move gently in several different directions:
The candle flame wavered, throwing shadows on the wall.