loquacious
Concise Oxford English Dictionary © 2008 Oxford University Press:
loquacious /lɒˈkweɪʃəs/
▶adjective talkative.
– derivatives
loquaciously adverb,
loquaciousness noun,
loquacity noun.
loquaciously adverb,
loquaciousness noun,
loquacity noun.
'loquacious' also found in these Oxford entries:

