First-line and Primary

First-line adjective - Singled out from a number or group as more to one's liking.

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

Primary adjective - Coming before all others in importance.

First-line and primary are semantically related. Sometimes you can use "First-line" instead an adjective "Primary".

Nearby Words: prime, prim, primarily, primal