从词源上来看， bullish 一词与小站（微信公众号：田间小站）推送过的bully无关，而是最早于16世纪60年代由熟词 bull （公牛）+ 形容词后缀 -ish （如……的、似……的、有……性质的）构成而来，最初用来表示“（像）公牛的、强壮的”或者“牛脾气的、顽愚的”。等到了1882年后， bullish 开始用在股票市场上引申指股票价格或股市行情“上涨的、看涨的”或者说“牛市的”，通常以股价上涨为特征或标志，或者希望或倾向于股价上涨，与 bearish （熊市的）相对

牛市

a bullish market

The market opened in a bullish mood.股市开盘时行情看涨。

The overstretched CEO is very bullish about the company's future.从这个概念出发， bullish 进而泛指“积极乐观的、对未来充满信心的、抱有希望的”，常意味着如股市行情看涨那般对某人或某个事物的前景非常乐观且充满信心。比如：这位超负荷硬撑着的首席执行官对公司的未来很有信心。

People can be quite bullish with their opinions. That does not mean they have their finger on the pulse. It just means they value their own opinion.名人名言

buoyant: cheerful and optimistic sanguine: optimistic or positive, especially in an apparently bad or difficult situation optimistic: hopeful and confident about the future人们会对自己的观点相当自信。这并不意味着他们了如指掌。这只意味着他们重视自己的观点。出自美国著名歌手、钢琴家和词曲创作人多莉·艾莫丝（Tori Amos）。同近义词