A HYIP is a high yield investment program that promises enormous returns. Essentially, it is a type of financial pyramid that is dangerous for participants.

Hype is the buzz and noisy promotion around a project that everyone is talking about. The term describes the peak of mass interest, which is not always backed by real value.

x2 denotes a twofold increase in an amount or profit. Here "x" is a multiplication sign, so x2 means a twofold growth relative to the initial value.

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.

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.