Trust from worker perhaps covering cover up (7)
I believe the answer is:
believe
'trust' is the definition.
(synonyms)
'worker perhaps covering cover up' is the wordplay.
'worker perhaps' becomes 'bee' (I've seen this in another clue).
'covering' says to hollow out the word (remove centre letters) (the letters which cover the word are used).
'cover up' becomes 'lieve' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'bee' with its centre taken out is 'be'.
'be'+'lieve'='BELIEVE'
'from' is the link.
Can you help me to learn more?
(Other definitions for believe that I've seen before include "Accept as true" , "Have faith; accept" , "Think" , "Swallow" , "Regard as true" .)