Article working soon (4)
I believe the answer is:
anon
'soon' is the definition.
(synonyms)
'article working' is the wordplay.
'article' becomes 'an' (indefinite article).
'working' becomes 'on' (on can mean working or activated).
'an'+'on'='ANON'
(Other definitions for anon that I've seen before include "Not identified by name" , "Soon, precious stone" , "devoid of credit" , "prolific author" , "At another time, of old" .)