wakeful
adjectiveUK /ˈweɪkfʊl/
US /ˈweɪkfəl/
Not able to sleep, or staying awake.
The baby was wakeful all night and kept everyone up.
OTHER MEANINGS
2. Watching carefully and staying alert to danger.
The wakeful guard noticed every sound in the dark.
3. Full of activity or movement; lively.
The wakeful city never seemed to rest.
4. A period of staying awake, especially at night.
His long wakeful hours left him tired by morning.