insomnious

alive astir attentive awake careful heedful insomniac observant on guard on the alert on the lookout on the qui vive sleepless vigilant waking wary watchful wide-awake

alive astir attentive careful heedful insomniac observant on guard on the alert on the lookout on the qui vive sleepless unsleeping vigilant waking wary watchful wide-awake

sleepy unaware