Adjective
1. carefully observant or attentive; on the lookout for possible danger;
"a policy of open-eyed awareness""the vigilant eye of the town watch""there was a watchful dignity in the room""a watchful parent with a toddler in tow"2. experiencing or accompanied by sleeplessness;
"insomniac old people""insomniac nights""lay sleepless all night""twenty watchful, weary, tedious nights"- Shakespeare