Barely moves sideways, being lazy (4)
I believe the answer is:
idle
'lazy' is the definition.
(similar in meaning)
'barely moves sideways' is the wordplay.
'barely' says to take the centre (the word is bare of its external letters).
'moves sideways' becomes 'sidles' (I've seen this in another clue).
The central letters of 'sidles' are 'IDLE'.
'being' is the link.
(Other definitions for idle that I've seen before include "Inert; lazy" , "Reluctant to work - Pythonesque Eric" , "Turn over" , "Inactive - lazy" , "Not busy" .)