degen - Someone who gambles too much or regularly makes bad bets. Also, anyone trading (stock shares or cryptocurrencies) without having carried out proper research. Short for "degenerate."

claustrophobia - The fear of being in close areas.

racism - A dislike of others because of race, skin color, or ethnicity.

chantage - Underhanded dealing, blackmail, intimidation, or a corrupt racket. Comes from French.

true as turnips - The truth, truthfulness, honest truth, gospel truth.

Pokémon - Fictional creatures that have elemental abilities and are treated like animals. They are capable of growing to different forms known as "evolutions". They can speak, but they are limited to saying their own names.
Can also refer to the game series from which the creatures originate.