Expansive

Adjective

 * 1) Able to be expanded.
 * 2) Comprehensive in scope or extent.
 * An expansive research work.
 * 1) Talkative and sociable.

Adverbs for Expansive
conveniently; adaptably; broadly; signally; remarkably; wonderfully; incredibly; exceptionally; naturally; amply; roomily; spaciously; capaciously; comfortably; amazingly.

Thesaurus
accessible, affable, airy, all jaw, all-embracing, all-inclusive, amiable, ample, amplitudinous, approachable, big, bouncy, broad, buoyant, candid, capacious, chatty, commodious, communicable, communicative, comprehensive, conversable, conversational, copious, deep, demonstrative, dilatable, dilatant, distensive, easy, effervescent, effusive, elastic, enlarging, expandable, expanding, expansible, expansile, expansional, extendable, extended, extending, extensible, extensile, extensional, extensive, extroverted, far-reaching, flip, fluent, frank, free, free-speaking, free-spoken, free-tongued, friendly, full, gabby, garrulous, gassy, generous, genial, glib, gossipy, great, gregarious, gushy, infinite, inflatable, inflationary, large, lavish, liberal, long-winded, loquacious, multiloquent, multiloquious, newsy, open, openhanded, outgoing, outspoken, overtalkative, prolix, resilient, roomy, scopic, self-revealing, self-revelatory, smooth, sociable, spacious, spreading, talkative, talky, unconstrained, unhampered, unrepressed, unreserved, unrestrained, unrestricted, unreticent, unsecretive, unshrinking, unsilent, unsuppressed, vast, verbose, volatile, voluble, voluminous, warm, wide, wide-ranging, widespread, windy