Alike means similar or nearly the same in appearance, nature, or behavior. When two things are alike, they share important qualities that make them resemble each other. Twin sisters might look so much alike that even their teachers confuse them. Two friends who both love chess, read the same books, and laugh at the same jokes think alike.

The word describes a close resemblance but not an exact match. If someone says “no two snowflakes are alike,” they mean each one has its own unique pattern, even though all snowflakes share the same basic structure. When a teacher treats students alike, she gives them equal attention and fairness, not identical treatment in every situation.

You'll often see alike in the phrase “both... alike,” as in “The challenge tested both beginners and experts alike.” This means it affected everyone in the same way, regardless of their experience level.

Alike differs from like, which makes a direct comparison between two specific things: “She looks like her mother” versus “She and her mother look alike.” The first compares two people, while the second describes their shared resemblance.