The phrase "well aware" is commonly use to indicate that someone understands or knows about a particular situation or piece of information. Synonyms for "well aware" include "keenly aware," "fully cognizant," "fully informed," "conscious of," "acutely aware," and "knowledgeable about." These synonyms convey the same meaning, but with slightly different connotations. For example, "keenly aware" suggests sharp observation, while "fully cognizant" implies comprehensive understanding. Using synonyms like these can help to add variety to your writing and avoid repetition, while still getting your message across clearly and effectively.