Other hyponyms of utterer include
alliterator,
caller,
phoner,
telephoner,
babbler,
chatterbox,
chatterer,
magpie,
prater,
spouter,
conversationalist,
conversationist,
schmoozer,
dictator,
drawler,
driveller,
jabberer,
ejaculator,
growler,
asker,
enquirer,
inquirer,
querier,
questioner,
lecturer,
lisper,
mentioner,
motormouth,
mumbler,
murmurer,
mutterer,
narrator,
storyteller,
teller,
orator,
public speaker,
rhetorician,
speechifier,
speechmaker,
prattler,
ranter,
raver,
reciter,
native speaker,
stammerer,
stutterer,
stentor,
talking head,
venter,
vociferator,
voicer,
wailer,
whisperer,
informant,
witness,
witnesser.