To emphasize something is to give importance to it or to lay stress upon it. If you emphasize a particular point in an argument, then you devote extra time or attention to it—or maybe you reiterate it several times—so as to convey its value or significance. The verb accentuate is very close in meaning, at least in terms of its definition. But it is used slightly differently: to accentuate something is to make it more visible or to draw attention to it. If a news story, for instance, accentuates the differences between two candidates for office, it makes those points of divergence very apparent. The shorter verb accent is the preferred term for when you’re talking about pronunciation, e.g., accent the first syllable of "into," or accent the first word of “White House.”

Usually when we describe something as extraordinary, we mean it is uncommon and noteworthy. The adjective phenomenal is used in much the same way, but it conveys even more awe and wonder. Phenomenal is defined as “highly extraordinary or prodigious” or “exceptional.” The noun phenomenon, from which the adjective derives, refers to something that is impressive or extraordinary. It also refers to something (a fact, occurrence, or circumstance) that is observed or observable, a category that is sometimes contrasted with what is able to be known by way of reason. This, perhaps, sheds light on the unique texture of the adjective: something that is phenomenal is observably remarkable to the extent that it challenges reason, expectation, or belief.

The straightforward adjective informed describes someone or something that has or is prepared with information or knowledge. An informed decision, for instance, is one that is made with relevant information taken into account. The adjective savvy is not so transparent. Someone who is savvy about something is experienced or knowledgable on that topic—you’re not going to get much by them (not that you should try!). Where informed emphasizes the presence of information, savvy emphasizes practical understanding and a familiarity that lends itself to shrewd maneuvering or strategic decision making. Now go forth, friends, and relish your synonym-savvy status!