When you are quietly sneaking in after curfew and you tread lightly, walking with your weight on the front of your feet and your heels in the air, this is an example of when you tiptoe.
- Full of anticipation; eager:.The children were on tiptoe before the birthday party.
- On one's toes and the balls of one's feet.
- Eager; excited; alert.
- Silently; stealthily.