The adjective adverse implies antagonism and opposition. It emphasizes the idea of misfortune and is often used to describe circumstances or events that are harmful to health and well-being. For instance, you might hear of adverse effects of pollution or adverse consequences of a decision. This decidedly unfriendly adjective is related to the noun adversity, “an unfortunate event or circumstance” or “unfavorable fortune or fate.”

Elated is the perfect adjective to use when you’re in particularly high spirits, especially when that exalted feeling arises from a victory or achievement. This lofty adjective comes from the verb elate, which means “to make very happy or proud,” but in earlier uses meant “to lift; elevate.” So the next time you’re walking on air or beaming with pride (or both!), remember that elated is up there, too, waiting in the wings for you to use it!

Something that is effective produces a desired or expected result. Something that is potent is not just effective; it's powerful. Potent implies great natural or inherent power, and it works as a synonym for effective when applied to things that are highly persuasive or convincing, such as a well-constructed argument. Potent symbols and potent metaphors are powerfully evocative, and potent ingredients produce powerful physical or chemical effects.