In a class by itself and Prime

Prime and in a class by itself are semantically related. in first-rate topic. In some cases you can use "Prime" instead an adjective phrase "In a class by itself".

Prime adjective - Highest in rank or authority.

In a class by itself and prime are semantically related. Sometimes you can replace phrase "In a class by itself" with "Prime", this terms are similar.

Nearby Words: primary, prim, primed, primal