Finfluencer
A social-media personality who discusses money, investing or crypto. They may be independent or receive payments from businesses they mention. Check their evidence, incentives and any permissions required for the activity in your jurisdiction.
Example: A video presenter praises a product while receiving a sponsorship payment. A crypto recommendation needs a check of evidence, disclosed incentives and applicable permissions.
Keep in mind: A follower count or an apparent licence does not establish accuracy, independence or permission for every advertised activity.
Flash loan
A loan designed to be borrowed and repaid, usually with a fee, within one transaction. If the required conditions fail, its state changes revert; an included failed attempt can still consume gas.
Example: Imagine a programmed worksheet that accepts a whole sequence only if its final repayment check passes. This illustrates atomic execution, not an ordinary shop loan. An included failed transaction may still cost gas.
FOMO
Fear of missing out: the anxious feeling that other people are gaining from something you are not part of, which pushes you to act quickly.
Example: Friends discuss a concert selling out, and you feel pushed to buy before checking your budget. A rising chart can create similar urgency without improving the evidence for a decision.
FUD
Fear, uncertainty and doubt. In crypto discussions, the label is often used for negative claims or criticism. Check the evidence: a concern may be accurate, mistaken or deliberately misleading.
Example: One message says a shop may close; another calls the warning negativity. Check the lease notice and reliable evidence. In crypto, a criticism's label does not decide whether it is true.
Fully diluted valuation (FDV)
Today's token price multiplied by the maximum supply, or by the total supply where no maximum exists. Data sites differ: CoinMarketCap uses maximum supply, while CoinGecko's guide uses total supply.
Example: If an invented token costs USD 2 and the stated supply basis is one million units, FDV is USD 2 million. Record which supply measure was used; this is not cash invested.
Keep in mind: Data providers can use different supply bases. Preserve the stated method when comparing values.
Funding rate
A percentage, reset at regular intervals, that decides how much one side of a perpetual futures market pays the other. It is designed to pull the perp's price towards the spot price.
Example: Under an invented rule, a 0.01% payment on USD 1,000 notional is USD 0.10 for that interval. Check which side pays; the sign, timing and formula can change.
Keep in mind: Payment direction, time interval and formula are venue specific. A funding payment is different from an ordinary trading fee.