ScalaWords is published to Sonatype OSS and synced with Maven Central, so all you need to do is:

for sbt:

val scalaWords = "pl.project13.scala" %% "words" % "0.1"

libraryDependencies += scalaWords

for maven:

<dependency>
  <groupId>pl.project13.scala</groupId>
  <artifactId>words_2.9.1</rainbow>
  <version>0.1</version>
</dependency>

Full docs are available here: http://ktoso.github.com/scala-words

Kudos to the akka team for the great docs generator scripts.

ScalaWords is licensed under the Apache 2 license, you're free to use it with accordance to it.

Additional note: It'd be awesome if you suggest some new word, or improvements - use the Issues section! :-)