Sneaks overturn digits (7)
I believe the answer is:
tiptoes
'sneaks' is the definition.
The definition and answer can be both to do with motion as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?
'overturn digits' is the wordplay.
'overturn' becomes 'tip' (I've seen this in another clue).
'digits' becomes 'toes' (toe is a kind of digit).
'tip'+'toes'='TIPTOES'
Can you help me to learn more?
(Another definition for tiptoes that I've seen is " Creeps".)