Verb
-
stop sleeping
"She woke up to the sound of the alarm clock"
- wake up - come alive
Adjective
-
mentally perceptive and responsive
"an alert mind"
"alert to the problems"
"alive to what is going on"
"awake to the dangers of her situation"
"was now awake to the reality of his predicament"
-
not in a state of sleep
completely conscious
"lay awake thinking about his new job"
"still not fully awake"