Acceptable and First-class

Acceptable adjective - Of a level of quality that meets one's needs or standards.

First-class and acceptable are semantically related. In some cases you can use "First-class" instead an adjective "Acceptable".

Nearby Words: accept, accepted, acceptance, accepting, acceptably

First-class adjective - Of the very best kind.

Acceptable and first-class are semantically related. Sometimes you can use "Acceptable" instead an adjective phrase "First-class".