teeter
🇺🇸
/ˈtiːtər/
🇬🇧
/ˈtiːtə(r)/
to wobble or sway, especially on the edge of something, as if about to fall
The tightrope walker teetered nervously on the wire.
선반 선수가 선을 타고 긴장하여 흔들렸다.