Talkative, loquacious (7)
I believe the answer is:
voluble
This clue is a double definition.
'talkative' is the first definition.
(similar in meaning)
'loquacious' is the second definition.
(similar in meaning)
(Other definitions for voluble that I've seen before include "Talkative" , "Talking a lot, overly fluent" , "With plenty to say" , "Loquacious" , "Gabby, garrulous" .)