Tick in tack? Get away with you! (9)
I believe the answer is:
skedaddle
'tick in tack?' is the definition.
The definition and answer can be both to do with motion as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for skedaddle that I've seen before include "Get out of town!" , "bolt" , "Run off hurriedly (colloq.)" , "Scarper" , "Departs quickly (colloq.)" .)