形容詞 expansive:

1. able or tending to expand or characterized by expansion
2. of behavior that is impressive and ambitious in scale or scope
   同義詞：grand, heroic
3. marked by exaggerated feelings of euphoria and delusions of grandeur
4. friendly and open and willing to talk
   同義詞：talkative

1. "After he'd had a few drinks, Charles became very expansive."
   "查爾斯喝了幾杯酒，話(huà)就滔滔不絕了。"
2. He greeted us with an expansive gesture (eg he stretched his arms wide) and a wide smile.
   他手舞足蹈笑逐顏開(kāi)地迎接我們。

ex.pan.sive

adj.（形容詞）
Capable of expanding or tending to expand.
膨脹的：具有膨脹的能力或趨勢(shì)的
Broad in size or extent; comprehensive:
龐大的；宏大的：
例句：
expansive police powers.
龐大的警察力量

Disposed to be open, communicative, and generous; outgoing:
豪爽的，開(kāi)朗的：愿交往的，開(kāi)放的，慷慨的；外出的：
例句：
Wine made the guest expansive.
酒使客人們心情舒暢

Grand in scale:
富裕的：
例句：
an expansive lifestyle.
富裕的生活方式

Psychiatry Marked by euphoria and delusions of grandeur.
【精神病學(xué)】 自大狂的：歡喜欲狂的或妄自尊大的

【引伸】
expan.sively
adv.（副詞）
expan.siveness 或
ex.pansiv.ity