Similarly means in a way that is alike or comparable to something else. When you notice that two things share common features or behave in the same way, you can connect them with similarly.

If your friend studies hard and gets good grades, and you study hard and get good grades, you're acting similarly. If one team practices every day to improve, and another team similarly dedicates itself to daily practice, both teams are taking the same approach.

The word helps you draw comparisons and show patterns. A science teacher might explain that dolphins and whales both breathe air and nurse their young, then add that similarly, seals and sea lions share these mammal characteristics despite living in the ocean. A book reviewer might write that one author creates vivid descriptions of nature, and similarly, another author fills their pages with rich natural imagery.

Similarly is closely related to likewise and in the same way. It's a useful word for making connections in your writing and showing how different examples relate to each other. When you use it, you're telling your reader: “Pay attention: this next thing works like the thing I just described.”