There are several synonyms for the word "sterilely," which refers to something that is devoid of life, growth, or productivity. One of the most common synonyms is "barrenly," which follows the same pattern of describing a lack of life. Other synonyms include "lifelessly," "unproductively," and "inertly." Each of these words implies a sense of dullness or emptiness, suggesting that something is neither fascinating nor engaging. All of these words are useful when describing environments or situations in which there is little to no activity, movement, or excitement. When you choose any of these synonyms, your readers will understand immediately what you mean when you describe something as "sterilely".