Going back and forth, then announcing that they will be forgoing fee, for example? (6)
I believe the answer is:
waving
This might be a double definition.
'going back and forth then announcing that they will be forgoing fee' is the first definition.
Both the definition and answer are adjectives. Perhaps you can see a link between them that I can't see?
'example?' is the second definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'for' acts as a link.
Can you help me to learn more?
(Other definitions for waving that I've seen before include "Moving hand to and fro in greeting" , "Making hand signals" , "with a flag?" .)