Worry consumed a contemptible type initially (7)
I believe the answer is:
agitate
'worry' is the definition.
(thesaurus)
'consumed a contemptible type initially' is the wordplay.
'consumed' becomes 'ate' (to eat is to consume food).
'contemptible type' becomes 'git' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'initially' says to put letters next to each other.
'a'+'git'='agit'
'ate' after 'agit' is 'AGITATE'.
Can you help me to learn more?
(Other definitions for agitate that I've seen before include "Stir; tie a tag (anag.)" , "Perturb" , "Stir (up public opinion?)" , "Keep moving" , "Make nervous; stir" .)