First-rate and Uppermost

First-rate adjective - Of the very best kind.

Uppermost and first-rate are semantically related. In some cases you can use "Uppermost" instead an adjective phrase "First-rate".

Uppermost adjective - Being at a point or level higher than all others.

First-rate and uppermost are semantically related. Sometimes you can use "First-rate" instead an adjective "Uppermost".