Teeter/ˈtiːtər/ Definition 1 of 2Pro Tip 1/3Physical Instability Used to describe something or someone not physically stable and at risk of falling. After spinning around, she teetered and almost fell down. Pro Tip 2/3Emotional Effect Can evoke a feeling of suspense or concern for potential fall or failure. I held my breath as the performer teetered on the high wire. Pro Tip 3/3Near Fall Suggests being very close to losing balance, emphasizing the tension of the moment. The vase teetered at the table's edge before I caught it.