Heads-up and Sharp-witted

Heads-up adjective - Fully alert and watchful.

Sharp-witted and heads-up are semantically related. In some cases you can use "Sharp-witted" instead an adjective phrase "Heads-up".

Sharp-witted adjective - Having or showing a practical cleverness or judgment.

Heads-up and sharp-witted are semantically related. Sometimes you can use "Heads-up" instead an adjective phrase "Sharp-witted".