Alert and Insomniac

Alert adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.

Insomniac and alert are semantically related. In some cases you can use "Insomniac" instead an adjective "Alert".

Nearby Words: alertness, alerted, alerting, alerter

Insomniac adjective - Not sleeping or able to sleep.

Alert and insomniac are semantically related. Sometimes you can use "Alert" instead an adjective "Insomniac".

Nearby Word: insomnia