Jimson \j(i)-mson, jim-son\ as a boy's name is a variant of Jim. See for origin and meaning of Jimson.
The baby name Jimson sounds like Jamison, Jameson and Jaimison. Other similar baby names are Gibson, Gilson, Jamon, Jakson, Jacson, Janson, Jenson, Jason, Jayson, Jaison, Jonson, Judson, Samson and Tamson.