Mud, Fijian perhaps, lacks iodine (7)
I believe the answer is:
slander
This might be a double definition.
'mud fijian' is the first definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'lacks iodine' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'perhaps' is the link.
Can you help me to learn more?
(Other definitions for slander that I've seen before include "Malicious gossip" , "False/malicious speech" , "Malicious speech" , "False or malicious report" , "Damaging statements" .)