Definition of bullish
1
: suggestive of a bull (as in brawniness)
2a
: marked by, tending to cause, or hopeful of rising prices (as in a stock market)
a bullish market bullish policies bullish investors
b
: optimistic about something's or someone's prospects
bullish on the company's future
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Merriam-Webster unabridged
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Time Traveler for bullish
The first known use of bullish was in 1566
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