Says with stammering tongue, primarily? (8)
I believe the answer is:
stutters
'says with stammering tongue primarily?' is the definition.
I can't judge whether this defines the answer.
'says with stammering tongue primarily?' is the wordplay.
'says' becomes 'utters' (I've seen this before).
'with' says to put letters next to each other.
'primarily?' indicates taking the first letters (I've seen 'primarily' mean this).
The initial letters of 'stammering tongue' is 'st'.
'utters' put after 'st' is 'STUTTERS'.
(Other definitions for stutters that I've seen before include "Speaks haltingly" , "impediments" , "falters" , "Stammers in repeating the first consonants of words" , "Speaks with hesitant repetition of first consonants" .)