Continuously playing with article to put on (2,3,2)
I believe the answer is:
on and on
'continuously' is the definition.
(I've seen this before)
'playing with article to put on' is the wordplay.
'playing' becomes 'on' (on can mean playing or performing).
'with' says to put letters next to each other.
'article' becomes 'an' (English indefinite article).
'to put on' becomes 'don' (as in donning or putting on an item of clothing).
'on'+'an'+'don'='ON AND ON'
(Other definitions for on and on that I've seen before include "Unceasingly" , "Endlessly" , "Incessantly" , "Continuing or continually" , "continuously" .)