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.

Something that is valuable has considerable monetary worth or is particularly useful for a specific purpose. This adjective is often used to talk about things that offer or may one day offer a material advantage or quantifiable benefit. Something that is invaluable has value beyond calculation or appraisal; it is priceless. Here we get into things so important or meaningful, such as the support of a dear friend through a difficult time, or yielding benefits of such great magnitude that they defy measurement or estimation.