Factory keeping one adaptable? (6)
I believe the answer is:
pliant
'adaptable?' is the definition.
('pliant' can be similar in meaning to 'adaptable')
'factory keeping one' is the wordplay.
'factory' becomes 'plant' (I've seen this before).
'keeping' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'plant' going around 'i' is 'PLIANT'.
(Other definitions for pliant that I've seen before include "Tractable" , "Flexible, easy to bend" , "Adaptable" , "Able to move supply" , "Bendable" .)