What a frog will do in the end (5)
I believe the answer is:
croak
'do in the end' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for croak that I've seen before include "Frog's sound - die" , "Caw" , "Make a froggy sound" , "Noise from pond life - die" , "Frog's call" .)