Unsteady, with old boy feebly taking charge (6)
I believe the answer is:
wobbly
'unsteady' is the definition.
(I've seen this in another clue)
'with old boy feebly taking charge' is the wordplay.
'with old boy' becomes 'wob' (this might be a standard abbreviation of which I'm unaware).
'taking' indicates named letters should be taken away.
'charge' becomes 'fee' (fee is a kind of charge).
'feebly' with 'fee' taken away is 'bly'.
'wob'+'bly'='WOBBLY'
Can you help me to learn more?
(Other definitions for wobbly that I've seen before include "one may be thrown in temper" , "Unstable - it may be thrown!" , "Swaying unsteadily" , "Rickety" , "Unstable - tantrum" .)