Whopper fitting into bed to start with (3)
I believe the answer is:
fib
'whopper' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'fitting into bed to start with' is the wordplay.
'to start with' suggests taking the first letters.
The first letters of 'fitting into bed' is 'FIB'.
Can you help me to learn more?
(Other definitions for fib that I've seen before include "Trivial lie" , "Petty falsehood" , "Small lie" , "minor piece of fiction" , "A harmless white lie" .)