expansive

able or tending to expand or characterized by expansion; "Expansive materials"; "the expansive force of fire"

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"

marked by exaggerated feelings of euphoria and delusions of grandeur

friendly and open and willing to talk; "wine made the guest expansive"