The flippening is a hypothetical moment when Ethereum overtakes bitcoin in market capitalization and becomes the number one cryptocurrency. The reverse scenario is jokingly called the floppening.
Flat, or a sideways trend, is a market state in which the price moves within a narrow horizontal range without a pronounced trend. It is a period of calm between upward and downward movements.
A fork in a blockchain is a change to the rules by which a block is recognized as valid. There are soft forks and hard forks, which affect the unity of the network in different ways.
A cryptocurrency fork is a new coin created on the basis of existing code or an algorithm with certain changes made to it. This is how altcoins based on Bitcoin and Litecoin came about.
FPGA is a field-programmable gate array, a semiconductor chip that can be configured for specific tasks after it has been manufactured. In mining, it occupies an intermediate position between graphics cards and ASICs.
Freicoin is a cryptocurrency built around the economic idea of money with a storage fee. It is based on the concept of "free money" by economist Silvio Gesell.
A FUDster is a person who deliberately spreads fear, uncertainty, and doubt around a crypto project. The goal of such actions is to influence the sentiment of market participants.
Futures is a derivative exchange contract for buying or selling an asset in the future at a price agreed in advance. On the crypto market, it is used for hedging risks and for speculation.
Difficulty is a network parameter that governs how hard it is to find a new block. It automatically adjusts to the network's total power, keeping the block issuance time stable.