Is told about being dependable (6)
I believe the answer is:
stolid
'dependable' is the definition.
(I've seen this before)
'is told about' is the wordplay.
'about' indicates an anagram.
'is'+'told'='istold'
'istold' with letters rearranged gives 'STOLID'.
'being' is the link.
(Other definitions for stolid that I've seen before include "Not excitable, doesn't show emotion" , "Not excitable or emotional" , "Emotionally insensitive" , "Calm, unanimated" , "Calm, dependable, unemotional" .)