tee·ter 
(tētər)
(tētər)intr.v. tee·tered, tee·ter·ing, tee·ters
1. To move or sway unsteadily or unsurely; totter.
2. To alternate, as between opposing attitudes or positions; vacillate.
3. To be close to or in danger of failure or ruin: The housing market teetered on the edge of collapse.
n.
Northeastern US
Northeastern US
See seesaw.
[Middle English titeren, probably from Old Norse titra, to shake.]