Shy man with ID (5)
I believe the answer is:
timid
'shy' is the definition.
(I know that shy can be written as timid)
'man with id' is the wordplay.
'man' becomes 'tim' (short for Timothy).
'with' says to put letters next to each other.
'tim'+'id'='TIMID'
(Other definitions for timid that I've seen before include "Inclined to avoid people" , "Bashful or fearful" , "Fearful - shy" , "Lacking in confidence" , "Lacking in courage" .)