If something is tippy, it is likely to move about so that one side is higher than the other, or to turn over.

It was hard to sleep on the tippy wooden benches in the bus station. 在公共汽车站的倾斜木凳上很难能睡着。

Her tippy little racing canoe was not designed for such difficult conditions. 她那容易翻的小皮艇不是为这种困难的条件设计的。

child's expression for on tiptoe(s)

I had to get on tippy toes to see over the fence. 我必须得踮起脚尖才能看到围栏那边。

I got on my tippy toes and reached for the bottles. 我踮起脚尖伸手去拿那些瓶子。