To liken something means to compare it to something else by pointing out similarities between them. When you liken your little brother's messy room to a tornado's aftermath, you're saying they share something in common: both leave everything scattered and chaotic.

Teachers often liken unfamiliar concepts to familiar ones to help students understand. A science teacher might liken the heart to a pump, or liken atoms to tiny solar systems with electrons orbiting a nucleus. These comparisons aren't claiming the things are identical, just that thinking about their similarities helps explain the new idea.

Writers use this technique constantly. An author might liken a character's courage to a lion's bravery, or liken someone's smile to sunshine. The word often appears in the phrase “liken X to Y,” as in “The coach likened the team's comeback to a phoenix rising from the ashes.”

When you liken two things, you're actively drawing a comparison to explain, illustrate, or emphasize a point. You're saying, “Think about this thing as if it were like that other thing, and you'll understand it better.”