in a way that is not fashionable or modern

I dress more conservatively for the office. 我在办公室里穿得比较保守。

He dresses conservatively, usually but not always in a dark suit. 他通常穿着保守，但并不总是穿深色西装。

carefully, often in a way that suggests that you do not like change

They continued to run the company conservatively. 他们继续保守地经营公司。

The drugs are generally safe if used properly and conservatively. 如果正确和保守地使用，这些药物通常是安全的。