First class and Integral

First class noun - Mail that includes letters and postcards and packages sealed against inspection.

Integral and first class are semantically related. In some cases you can use "Integral" instead an adjective phrase "First class".

Integral adjective - Being a part of the innermost nature of a person or thing.

First class and integral are semantically related. Sometimes you can use "First class" instead an adjective "Integral".

Nearby Words: integrate, integrity, integrated, integer, integration