---Man, can you move backwards?
---No, I won't budge an inch.

This is the talk among me and my son. From this episode, one can feel there is a confrontation between my and my son.

"Budge" means move slightly. But don't forget the following:

1)fudge
2)nudge
3)judge
4)grudge

English-speaking students do some exercises to study these words. But we learn these words by random experiences.