The “bullish” refers to a trader who is optimistic that the price will increase.
If you are bullish on a market, you believe that the market is going to rise.
A “bullish market” is when the price is in an uptrend, marked by higher highs and higher lows.
The term is based on a bull attacking upwards with its horns.
It is not yet cleared that when the term used for the first time, but according to experts it’s from a painting by William Holbrook Beard called “The Bulls and Bears in the Market,” which is believed to depict the U.S. stock market crash of 1873.
If you are “a bull” or “bullish“, it means that you have a positive sentiment and are optimistic about making money in a market.
For example, Joe is “bullish” on bitcoin, which means he thinks BTC will go up in price.

Bullish vs. Bearish

Being “bearish” is the opposite of being bullish.
While being bullish means you are optimistic that prices will go higher from where they currently are, being bearish is the opposite: you think prices will trade lower from where they currently are.
Bullish traders wait to take long positions. On the other side, Bearish traders are looking to take short positions where they will benefit/profit if the market goes down from its current price.
Full of Bull
If you’re “full of bull”, it does NOT mean that you’re extremely or completely optimistic.
For example, if a trader says he or she has a trading system with a 100% win rate, this trader is “full of bull”.
In this scenario, “bull” gives a complete different meaning which is NSFW. 

A

Abandoned Baby | Account Statement Report | Account Value | Accumulation Area | Accumulative Swing Index ASI | Address | ADDY | ADP National Employment Report | Advance Or Decline Index | Afghanistan Afghanis | Agency Model | Aggressor | Alan Bollard | Alan Greenspan | Albania Leke | Algerian Algeria Dinars | Alligator | Altcoin | Analysts | Andrews Pitchfork | Angela Merkel | Angola Kwanza | Anti Money Laundering AML | ANZ Commodity Price Index | Application Programming Interface API | Appreciation | Arbitrage | Argentina Pesos | Armenian Drams | Aroon Oscillator | Aroon Up And Down | Aruban Guilder | Ascending Channel | Ascending Trend Line | Ascending Triangle | ASIC Mining | Asset | Asset Purchase Programme APP | Asset Purchases | Asymmetric Encryption | Asymmetric Slippage

B

Bag | Bag Holder | Bahmas Dollars | Bahrain Dinars | Bail In | Bail Out | Balance Of Trade | Baltic Dry Index | Bangladesh Taka | Bank Levy | Bank Of Canada BOC | Bank Of England BOE | Bank Of International Settlement BIS | Bank Of Japan BoJ | Bank Run | Bank Run | Banking Institutions | Bar Chart | Barbados Dollars | Base Currency | Base Rate | Basing | Basing Point | Bear | Bear Flag | Bear Market | Bear Trap | Bearish | Binary Options | Bitcoin Cash | Bitcoin Maximalist | Bitcoin Or BTC | Block | Block Explorer | Block Header | Block Height | Block Reward | Blockchain | Blue Chip | Bolivia Bolivianos | Bollinger Bands | Bond | Bond Auction | Bond Yeild | Book | Boris Schlossberg | Botswana Pulas | Brazilian Brazil Real | Breakdown | Breakeven | Breakout | Brent Crude | Bretton Woods Agreement Of 1944 | BRIC | Broadening Formation | Broker | BTD | BTFD | Bucket Shop | Bulgarian Leva | Bull | Bull Flag | Bull Market | Bull Trap | Bullish | Bullish Engulfing Pattern | Bundesbank | Burundi Francs | Business Inventories | Buy Side | Buying Pressure

C

Cable | Camarilla Pivot Points | Cambist | Cambodian Riels | Canadian Dollar | Cape Verde Escudos | Carbon Credits | Cardano ADA | Carry Trade | Cash Market | Catalyst | Cayman Islands Dollars | Cboe Eurocurrency Volatility Index | Central Bank | Central Bank Digital Currency | Central Bank Intervention | Central Counterparty Clearing Houses CCPs | Central Limit Order Book Or CLOB | Chaikin Oscillator | Chart Pattern | Chartist | Chicago PMI | Chilean Peso | Chinese Renminbi | Chinese Yuan | Christine Lagarde | Circulating Supply | Cleared Funds | Clearing | Clearing Price | Client | Closed Position | Cloud Mining | Coin Age | Cold Storage | Collateral | Colombian Pesos | Comdoll | Commercial Corporations | Commission | Commitments Of Traders Report Or COT | Commodity | Commodity Channel Index Or CCI | Commodity Futures Trading Commission CFTC | Commodity Research Bureau Index | Commodity Trading Advisor CTA | Communaute Financiere Africaine Francs | Comoros Francs | Completeness | Compound COPM | Comptoirs Francais Du Pacifique Francs | Conference Board Consumer Confidence Index CCI | Confirmation | Confluence | Congo Congolese Francs | Consensus Algorithm | Consolidation | Consumer Price Index CPI

E

Economic Indicators