Half finished in changing a fuse, I have to be chatty! (8)
I believe the answer is:
effusive
'be chatty' is the definition.
(thesaurus)
'half finished in changing a fuse i have' is the wordplay.
'half' suggests halving the letters.
'finished' becomes 'up' ('up' can be similar in meaning to 'finished').
'in' indicates putting letters inside.
'changing a fuse' becomes 'effs' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'i have' becomes 'ive'.
'up' halved is 'u'.
'u' put within 'effs' is 'effus'.
'effus'+'ive'='EFFUSIVE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for effusive that I've seen before include "lyrical" , "Two-wheeler" , "Verbally gushing" , "Pouring out words" , "Extravagantly demonstrative, gushing" .)