Talkative, a.
Given to much talking.
Syn. -- Garrulous; loquacious. See Garrulous. -- Talk"a*tive*ly, adv. -- Talk"a*tive*ness, n.
Shades of meaning
Fernald has no entry of its own for talkative; he lists it under garrulous.
Where he writes about it:
The talkative person has a strong disposition to talk, with or without an abundance of words, or many ideas; the loquacious person has an abundant flow of language and much to say on any subject suggested; either may be lively and for a time entertaining; the garrulous person is tedious, repetitious, petty, and self-absorbed. — from garrulous
We speak of a chattering monkey or a chattering idiot, a talkative child, a talkative or loquacious woman, a garrulous old man, a verbose writer. — from garrulous