watchful
1. [ adjective ] carefully observant or attentive; on the lookout for possible danger
Synonyms: wakeful open-eyed vigilant argus-eyed
Examples:

"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"

Related terms: alert
2. [ adjective ] carefully observant or attentive; on the lookout for possible danger
Synonyms: wakeful open-eyed vigilant argus-eyed
Examples:

"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"

Related terms: alert
3. [ adjective ] experiencing or accompanied by sleeplessness
Synonyms: sleepless insomniac
Examples:

"insomniac old people" "insomniac nights" "lay sleepless all night" "twenty watchful, weary, tedious nights"- Shakespeare

Related terms: awake
Similar spelling:   watchfully