Some trainee dedicated to work required (6)
I believe the answer is:
needed
'required' is the definition.
(synonyms)
'some trainee dedicated to' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'NEEDED' can be found hidden inside 'trainee dedicated to'.
'work' is the link.
This may not be correct. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for needed that I've seen before include "Essential; called for" , "Missing" , "'Lacked, required (6)'" , "Lacked something essential" , "Required; sounds like worked (dough)" .)