Sneak attending class? (6)
I believe the answer is:
inform
'sneak' is the definition.
Although both the answer and definition are verbs in their base form, I can't see how they can define each other.
'attending class?' is the wordplay.
'attending' becomes 'in' (I've seen this in other clues).
'class?' becomes 'form' ('form' can be a synonym of 'class').
'in'+'form'='INFORM'
Can you help me to learn more?
(Other definitions for inform that I've seen before include "Enlighten" , "Put wise" , "Tell - shop" , "Brief" , "Give knowledge to" .)