Fiat

Government-issued currency, e.g., USD or EUR.

Finality

The assurance of the irreversibility of a blockchain transaction.

Fork

A protocol split creating a new blockchain.

Front-running

Executing a trade based on foreknowledge of a pending transaction.

Fully Diluted Valuation (FDV)

A projection of a protocol’s market value in the future.

Fear Of Missing Out (FOMO)

The feeling of fear that you might be missing out on an opportunity.