A way as is a period of inactivity (6)
I believe the answer is:
stasis
'a period of inactivity' is the definition.
(I've seen this in another clue)
'a way as is' is the wordplay.
'a way' becomes 'st' (abbreviation for street).
'st'+'as'+'is'='STASIS'
(Other definitions for stasis that I've seen before include "Standstill" , "Total lack of movement" , "Stoppage, arrest" , "Stoppage of blood circulation" , "Cessation" .)