agryp- +
(Greek: sleeplessness, wakefulness; originally, it meant "sleeping in the field")
agrypnetic
A reference to sleeplessness or insomnia.
agrypnia
1. Wakefulness, sleeplessness; insomnia.
2. A vigil before certain feasts (as Easter) in the Eastern Church.
agrypnia senilis
Sleeplessness that exists with elderly people.
agrypnocoma
1. Wakeful coma; apathetic, or lethargy with wakefulness and muttering delirium.
2. A state of disordered consciousness or delirium in which lethargy and confusion are nevertheless associated with prolonged wakefulness and lack of sleep.
agrypnode
1. Preventing sleep.
2. Any agent causing wakefulness.
agrypnotic
1. Anything administered to produce wakefulness; such as, strong tea or coffee.
2. Of or relating to wakefulness; sleepless.