In city, has time for purity (8)
I believe the answer is:
chastity
'purity' is the definition.
(synonyms)
'in city has time' is the wordplay.
'in' indicates putting letters inside.
'time' becomes 't' (abbreviation).
'has'+'t'='hast'
'city' going around 'hast' is 'CHASTITY'.
'for' acts as a link.
(Other definitions for chastity that I've seen before include "Virtue, celibacy" , "Medieval contraceptive device" , "Abstinence and purity" , "Pure character" , "Sexual abstinence" .)