Nubivagant

Her nubivagant mind caused her to forget why she entered the room.

She spent the afternoon in a nubivagant state, lost in her daydreams.

He spent the afternoon in a nubivagant state, lost in thought.

His nubivagant thoughts often left him lost in his own world.

His nubivagant mind often caused him to lose track of time.

The nubivagant patient failed to follow their doctor's instructions.