The word "brainily" is an adverb used to describe something done in an intelligent or cerebral manner. Some synonyms for "brainily" include intellectually, cleverly, astutely, shrewdly, and sagaciously. Alternatively, the word "brainy" can also be used in place of "brainily" to describe something or someone displaying intelligence or intellect. Other synonyms for "brainy" include knowledgeable, learned, erudite, and scholarly. When used together, these words create a rich vocabulary full of descriptive alternatives that allow writers and speakers to express themselves with nuance and depth. Whether discussing a particularly sharp idea or a particularly clever individual, the use of synonyms for "brainily" can help add texture and complexity to any communication.