EXPANSIVE
expansive, talkative
(adjective) friendly and open and willing to talk; “wine made the guest expansive”
expansive
(adjective) marked by exaggerated feelings of euphoria and delusions of grandeur
expansive
(adjective) able or tending to expand or characterized by expansion; “Expansive materials”; “the expansive force of fire”
expansive, grand, heroic
(adjective) of behavior that is impressive and ambitious in scale or scope; “an expansive lifestyle”; “in the grand manner”; “collecting on a grand scale”; “heroic undertakings”
Source: WordNet® 3.1
Etymology
Adjective
expansive (comparative more expansive, superlative most expansive)
Comprehensive in scope or extent.
Talkative and sociable.
Able to be expanded.
(mathematics) Exhibiting expansivity.
Source: Wiktionary
Ex*pan"sive, a. Etym: [Cf. F. expansif.]
Definition: Having a capacity or tendency to expand or dilate; diffusive;
of much expanse; wide-extending; as, the expansive force of heat; the
expansive quality of air.
A more expansive and generous compassion. Eustace.
His forehead was broad and expansive. Prescott.
– Ex*pan"sive*ly, adv. -Ex*pan"sive*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition