Meaning of “teeter” - Learner’s Dictionary

teeter

verb uk us /ˈtiːtər/
be teetering on the brink/edge of sth

to be in a situation where something bad might happen very soon:

The economy is teetering on the brink of collapse.
teeter about/across/around, etc

to look as if you are going to fall:

She teetered around the room in six-inch heels.

(Definition of “teeter” from the Cambridge Learner’s Dictionary © Cambridge University Press)