His name can be said without a hiss (3)
I believe the answer is:
dai
'hiss' is the definition.
I know nothing about this answer so I can't tell whether this works.
'his name can be said without a' is the wordplay.
I cannot quite see how this works, but
'a' is within the answer.
'name' could be 'di' and 'di' is present in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dai that I've seen before include "Lloyd George?" , "Welshman" , "Perhaps man in Cardiff" , "Welshman's name" , "Welsh male name" .)